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NLG Users Repair Logs and Other Ramblings. Request your very own topic. Just ask any site staff. => Channelmaniac's Arcadecomponents' Old School Repair Logs => Topic started by: channelmaniac on May 07, 2014, 07:28:38 PM
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Fixed: CPS1: Magic Sword:
Symptom: Dead/music & sound on power up
CPS1 boards play music or sounds immediately upon power up if there is a problem with the main CPU or ROMs. Checked the ROMs - Replaced 2 bad EPROMs. Board would now boot but display no picture and would NOT play blind. This is usually a C board issue. A closer inspection of the C board revealed a gouged trace. Repaired the gouged trace on the C board to fix the game.
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Fixed: CPS1: SFII (Street Fighter II):
Symptom: Dead
The Audio subsystem ROMs, main CPU ROMs, and the graphics ROMs showed normal signals on their pins. Pulling one of the program ROMs did not result in any music playing. Swapped the A board for a known good one and received the audio that was missing. The C board was bad (The custom Capcom chip was resoldered to rule out broken surface mount solder connections) and the A board had audio problems. Swapped the C board out from another SFII that had a bad ROM board. Game would now play but had no audio. Repaired 2 cut traces and replaced 8 caps in the audio section to fix the missing audio problem.
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Fixed: Strider:
Symptom: Dead
Missing program ROM. Dead and no audio output to signify missing program ROM. Replaced 1 missing program ROM. Still dead. No video clock was getting to the C board. Replaced broken ferrite bead jumper at FB1 to fix the power issue. Had corrupt graphics and no sound. Resoldered custom IC on C board to fix the corrupt graphics. Replaced 2 incorrect 1Mb EPROMs. (Had JEDEC and needed non-JEDEC) to fix the sound issue. Replaced 2 missing 16 Bit graphics EPROMs to finish the game.
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Fixed: Saturday Night Slam Masters
Symptom: Dead
This is one of the games that has a special C board with a battery backed encryption key on it. Battery was dead. "Phoenixed" the C board. This means it was resurrected from the dead by programming 2 new unencrypted program ROMs, removing the battery from the C board, cutting a ground trace to 2 pins on the custom Capcom C board chip, and tying those 2 pins to +5v.
Game was still dead. This one also has the special QSound board and it had a similar battery as the C board that was also dead. Phoenixed the Q-Sound board by burning a 27C040 EPROM with both the encrypted and unencrypted code and adding in a 4002 IC to bank switch the ROMs back & forth to pass the CPU encryption checks. Attempted to play the game but it worked fine - I really stink at this one. Wink
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Fixed: Knights of the Round
Symptom: Dead
This is another Capcom game with a suicide battery on the C board. Removed the dead battery. Traces on the custom IC were already cut so I just needed to jumper 2 pins of the encryption chip to +5v then replace 1 EPROM with a new one that had suicide free code to finish out the repair / phoenix of this board.
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Fixed: CPS2: XMen Children of the Atom
Symptom: Dead
Board had suicided - the battery backing up the encrypted CPU had died. Phoenixed the board by erasing and reprogramming the 27C4096 EPROMs (Cust supplied) with phoenixed code (cust supplied.)
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Fixed: CPS2: Powered Gear
Sympom: Dead
Another Capcom game that has suicided. Removed the dead battery. Erased and reprogrammed the 27C4096 EPROMs (cust supplied) with phoenixed code (cust supplied).
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The CPS1 games take different types of EPROMs depending on the B board type and the jumper settings.
For 32pin 1Mb EPROMS:
If the silkscreen says 27C301 then it takes NON-JEDEC type 1Mb EPROMs.
If the silkscreen says 1M ROM then it could take either and if it says 27C1001 then it takes the JEDEC type 1Mb EPROMs (27C1001, 27C010, etc...)
For the 40 pin EPROMS/Mask ROMs:
Look at the silk screen... if it says 27C4096 then it's the JECEC style pinout. 27C4002, 27C4095, etc. will work.
If it says HN62404 then it is a totally different pinout. 27C400 EPROMs are what you need to replace these. (NOT 27C040 which are only 32pin 8 bit EPROMs)
Let's look at board jumpers on board 89624B.
Now you might have noticed some solder jumpers down towards the 7F and 8F board area. These jumpers (JP0 - JP1 and DJ0 - DJ1) allow you to change the EPROMs in sockets 28 - 31 and 33 - 36 from the JEDEC to non-JEDEC pinouts.
If the jumpers are set like this, then it is set up for a JEDEC style pinout EPROM.
PJ0
1 4
\xx/
x\/x
or
PJ0
1 4
|xx|
|xx|
And if they are set like this, then it is set up for non JEDEC style EPROMs
PJ0
1 4
x/\x
/xx\
or
PJ0
1 4
x||x
x||x
DJ0 controls 28/33
DJ1 controls 29/34
PJ0 controls 30/35
PJ1 controls 31/36
VJ0 and VJ1 do the same thing for the Voice ROMs.
VJ0 controls 18
VJ1 controls 19
I haven't examined the jumpers at LJ3, LJ4, RJ3, or RJ4. They appear to control the A16 and OE* signals for the ROMs at 1-8, 10-17, and 20-27 but I haven't needed to pin them out yet.
Enjoy!
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Troubleshooting CPS 1 audio problems:
Turns out Capcom did the same stupid thing as SNK... The board is silkscreened for a Z80A and they put a cheaper, slower rated Z80 on it. That makes this component very suspect if you have audio problems.
However, that's not always the problem on the board.
Tools needed: Multimeter to check for bad traces and a logic probe (preferably one with audio) - bonus if you have an oscilloscope.
Symptom: No FM audio or no audio at all: (And no suicide battery on a QSound audio board)
First check the YM3012 DAC IC. If there is audio coming off of it check the analog part of the audio circuit. The audio part of the logic probe will help here. Look for bad op amps or capacitors. Check for a broken volume pot. If there's no audio coming off of the YM3012 DAC then check the digital portion of the audio circuitry.
To troubleshoot the digital section start by checking the EPROM in socket 9 - the Audio EPROM. Are there any signals on the data lines? No? Check the reset line on pin 26 as you power up the board. If it starts out low then flips to high (after a small pause) then the reset line is OK.
If the reset line is bad, trace it back and fix it.
Next check the clock line on pin 6 of the Z80. If it is bad, replace the 3.579 oscillator. If it is good, replace the CPU.
If the data lines and address lines show signals then check pins 2, 5, and 6 on the YM2151. These are the IRQ*, RD*, and WR* signals. If they are stuck high or low then replace the CPU.
If replacing the CPU at this point doesn't solve the issue try replacing the SRAM IC. (2k x 8 - a 6116 SRAM IC can be used to replace it)
If there is activity on those lines of the YM2151 then check pin 21 of it. It will have a steady pulse if no audio is coming out (Serial Data out). When audio is coming out there will be a series of scratchy pulses on it - this is more evident if your logic probe has audio. If there is no audio pulses coming out on pin 21 then replace the YM2151.
Your FM audio should now be working.
The non-FM sound effects (voice, punching, and other sounds) are simply controlled by the OKI M6295 IC. Check EPROMs 18 and 19 as the digital code for the sound effects is stored there. Repair any bad traces or replace any bad EPROMs. Double check to make sure the jumpers for the EPROMs are set correctly for the EPROM type used. (There's another post in this thread on how to set the jumpers)
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OK,
I've pinned out one of the connectors far enough to use in troubleshooting audio.
Enjoy!
RJ
CN1 (Sound)
A1 - VCC
B1 - GND
A2 - VCC
B2 - GND
A3 - VCC
B3 - GND
A4 - EPROM 9 CE*
B4 - A16 -------
A5 - A15 ^
B5 - A14 |
A6 - A13 |
B6 - A12
A7 - A11
B7 - A10
A8 - A9
B8 - A8
A9 - A7
B9 - A6
A10 - A5 Z80 to EPROM 9
B10 - A4
A11 - A3
B11 - A2
A12 - A1
B12 - A0
A13 - D7
B13 - D6
A14 - D5
B14 - D4
A15 - D3 |
B15 - D2 |
A16 - D1 |
B16 - D0 -------
A17 - EPROM 18 CE* Pin 35 (OKI M6295)
B17 - EPROM 19 CE* 8E pin 6 (74LS04)
A18 - A16 Pin 34 -------
B18 - A15 Pin 33 ^
A19 - A14 Pin 32 |
B19 - A13 Pin 31 |
A20 - A12 Pin 30
B20 - A11 Pin 29
A21 - A10 Pin 28
B21 - A9 Pin 27
A22 - A8 Pin 26
B22 - A7 Pin 25
A23 - A6 Pin 24
B23 - A5 Pin 23
A24 - A4 Pin 22 OKI M6295 to EPROM 18/19
B24 - A3 Pin 21
A25 - A2 Pin 20
B25 - A1 Pin 19
A26 - A0 Pin 18
B26 - D7 Pin 16
A27 - D6 Pin 15
B27 - D5 Pin 14
A28 - D4 Pin 13
B28 - D3 Pin 12 |
A29 - D2 Pin 11 |
B29 - D1 Pin 10 |
A30 - D0 Pin 9 -------
B30 - NC
A31 - NC
B31 - NC
A32 - NC
B32 - NC
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Symptom: No audio
Board: CPS1 A Board
Data lines were active with random junk. Interrupt pin on sound IC was stuck at logic high. Replaced Z80 CPU with a proper Z80A CPU to fix board.
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Symptom: No audio
Board: CPS1 A Board
Data line D1 on EPROM 9 was pulsing at a very regular interval. Interrupt pin on sound IC was stuck at logic high. Replaced Z80 CPU with a proper Z80A CPU to fix board.
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Symptom: Very low audio
Board: CPS1 A Board
Board had VERY faint audio - only there if volume was cranked to full blast. Shorted across the volume pot and there was no increase in the volume - the volume pot was good. Tested the electrolytic capacitors in the pre-amp and audio amp circuits. Replaced 2 open 10uf capacitors and replaced 4 100uf, 1 47uf, and 1 4.7uf capacitors with high ESR readings to fix board.
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Here's another CPS1 A to B board connector pinned out.
Enjoy!
CN4 (Char ROM Data/Select?)
G1 - GND
H1 - GND
G2 - GND
H2 - GND
G3 - GND
H3 - 1A PIN 2 ------- PIN 98 -------
G4 - 1A PIN 3 ^ PIN 97 ^
H4 - 1A PIN 4 | PIN 96 |
G5 - 1A PIN 5 | PIN 95 |
H5 - 1A PIN 6 PAL16L8 PIN 94
G6 - 1A PIN 7 IC 1A PIN 93
H6 - 1A PIN 8 B Board PIN 92
G7 - 1A PIN 9 | PIN 91
H7 - 1A PIN 11 | PIN 90
G8 - 1A PIN 13 | PIN 89
H8 - 1A PIN 15 ------- PIN 88
G9 - 1B PIN 5 ------- PIN 87
H9 - 1B PIN 4 74LS245 PIN 86 CPS-A-01
G10 - 1B PIN 3 B Board PIN 85 DL-0311-1001
H10 - 1B PIN 2 ------- PIN 84 IC 2H
G11 - 1C PIN 2 ------- PIN 83 A Board
H11 - 1C PIN 3 ^ PIN 82
G12 - 1C PIN 4 | PIN 80
H12 - 1C PIN 5 74LS245 PIN 79
G13 - 1C PIN 6 B Board PIN 78
H13 - 1C PIN 7 | PIN 77
G14 - 1C PIN 8 | PIN 76
H14 - 1C PIN 9 ------- PIN 75
G15 - NC PIN 74 |
H15 - NC PIN 73 |
G16 - NC PIN 72 |
H16 - NC PIN 71 -------
G17 - PIN 119 C Board PIN 5 IC 8F A Board
H17 - 8E PIN 8 74LS08 JAMMA PIN P (Video Sync)
G18 - GND
H18 - GND
G19 - GND
H19 - PIN 104 ------- PIN 11 IC 4C A Board
G20 - PIN 102 ^ R/W* -------
H20 - PIN 101 | OE* ^
G21 - PIN 100 | A11 |
H21 - PIN 99 A10 |
G22 - PIN 98 Custom A9 MB81C78A
H22 - PIN 97 Capcom A8 IC 1C & 3C
G23 - PIN 96 IC A7 A Board
H23 - PIN 95 C Board A6 (Color SRAM?)
G24 - PIN 94 A5
H24 - PIN 93 A4
G25 - PIN 92 | A3 |
H25 - PIN 91 | A2 |
G26 - PIN 90 | A1 |
H26 - PIN 89 ------- A0 -------
G27 - VCC
H27 - VCC
G28 - VCC
H28 - VCC
G29 - VCC
H29 - VCC
G30 - Pin 108 C Board PIN 6 IC 1F A Board (Video Clk?)
H30 - VCC
G31 - VCC
H31 - VCC
G32 - VCC
H32 - VCC
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Model: Street Fighter 2
Symptom: Dead
Game would not give anything on the screen.
Replaced a broken ferrite filter on the B board and tested. This one supplied the video clock to the C board.
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Model: Street Fighter 2 Rainbow Edition
Symptom: Garbled music and sound effects
CN1 Pin A17 on the B board was not making contact. This was the CE* line on one of the sound ROMs. Replaced broken socket connector with one from Pin A32, an unused pin on the connector.
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Model: Knights of the Round
Symptom: Black screen, junk sprites.
The 3.6v battery on the C board read 2.9v. The board had suicided. Cut ground traces on pins 44/45 of the custom Capcom chip on the C board. Jumpered those pins to +5v. Erased and reprogrammed IC 23U with phoenix code. Tested the game.
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Model: Dungeons & Dragons: Tower of Doom
Symptom: Dead
This game was a CPS-2 game. Tested the battery on the ROM board. It was dead and the board had suicided. Erased ROM 3, 4, 5, and 7 then reprogrammed them with customer supplied suicide free code.
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Model: Street Fighter II, Champion Edition
Symptom: No Sync and no audio
Board had been worked on before. An attempt was made at replacing the Z80A CPU.
Replaced a burnt 220 ohm surface mount resistor on the A board and a 74LS00 at location 3F on the B board to fix the sync problem. Removed the Z80 CPU and checked the traces. Socketed the Z80A chip and repaired three bad traces. Tested game.
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Model: Saturday Night Slam Masters
Symptom: Dead
Removed battery, cut 2 traces, and added one jumper to the C board. Replaced ROM 23 with the Phoenixed version of code.
Removed R33 and C12 then jumpered across C12 on the Qsound board. Cut the jumper between pins 30 and 31 on the sound EPROM. Added a jumper from pin 27 of the Kabuki CPU to pin 31 on the sound EPROM.
Cut the jumper between Pins 31 and 32 of the sound EPROM. Added in a 4002 IC and jumper wires necessary to phoenix the sound board. Replaced the sound EPROM with the Phoenixed version of code and tested.
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Model: Warriors of Fate
Symptom: Dead
Removed battery, cut 2 traces, and added one jumper to the C board. Replaced ROM 23 with the Phoenixed version of code.
Removed R33 and C12 then jumpered across C12 on the Qsound board. Cut the jumper between pins 30 and 31 on the sound EPROM. Added a jumper from pin 27 of the Kabuki CPU to pin 31 on the sound EPROM. Replaced the sound EPROM with the Phoenixed version of code. Tested.
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Model: Captain Commando
Symptom: None. Game works but customer requested it be Phoenixed
Removed battery, cut 2 traces, and added one jumper to the C board. Replaced ROM 23 with the Phoenixed version of code and tested.
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Model: Mercs
Symptom: Missing background graphics
Cleaned pins on the 0224B PROM and tested.
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Model: Mercs
Symptom: Corrupt foreground and background graphics
Resoldered the C board chip and tested
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Model: Carrier Air Wave
Symptom: CPS error and graphics corruption
Patched a damaged trace on the C board to fix the CPS error message. Resoldered the custom graphics chip on the A board to fix the graphics corruption. Tested.
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Model: Captain Commando
Symtpom: Dead
C board was bad. Replaced with a compatible C board with a CPS-B-21 chip from a Street Fighter II game.
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Model: Punisher
Symptom: Dead
Phoenixed the Q-Sound board and the C board. Replaced the 8 1Mb EPROMs on the ROM board (B board) with 2 4Mb EPROMs containing the phoenix code.
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Model: Punisher
Symptom: Board crashes with Address Error at FFFF8F68
Board had "PSE" version code on 8 1Mb EPROMs and not "PSU" code. The phoenix code is based on PSU ROMs and mixing the ROMs resulted in the error code.
Replace the 8 1Mb EPROMs with 2 4Mb 16 bit EPROMs with the 16 bit version of the Phoenix code to resolve this error.
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Model: Cadillacs and Dinosaurs
Symptom: Dead. Board suicided.
Replaced the ROM on the QSound board with a 27C020 programmed with the phoenix code. Modified board to use the code. Modified the C board and reprogrammed 2 EPROMs on the B board with phoenix code to finish resurrecting the game.
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Model: Punisher
Symptom: Dead. Board suicided.
Replaced the ROM on the QSound board with a 27C020 programmed with the phoenix code. Modified board to use the code. Modified the C board and reprogrammed 5 EPROMs on the B board with phoenix code and replaced 3 slow EPROMs (Replaced 175ns with 120ns) to finish resurrecting the game.
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Model: CPS1
Tip: Troubleshooting Sync Problems
If the CPS1 board works, but has no sync then this will apply. This will not apply if the game is not otherwise working OK.
The sync pulses are generated by the custom chip on the C board. Pins 118 and 116 on the C board carry the signal to pins 13 and 12 of the 74LS08 on the B board, directly under the C board. This chip ANDs the signals and the output pin, pin 11, connects to resistor R28 (on the smaller SMT style A board), then on to the sync pin of the JAMMA connector.
If the board is missing sync, first check for damage on R28 (220 ohm) and continuity to pin 11 of the 74LS08 on the B board. If those are good then check for pulses on pins 116 and 118 of the C board. If the pulses are there on BOTH pins and missing from pin 11 of the 74LS08, then replace the 74LS08. If one or more pulses are missing and the pins stuck low on 116/118 of the C board then reflow the custom chip on the C board. If that fails to fix the sync problem then replace the faulty C board.
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Model: Captain Commando
Symptom: Dead
Unit has a suicide battery on it. Modified the C board then reprogrammed the 22 and 23 EPROMs with suicide free code. Tested the game.
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Model: Cadillacs and Dinosaurs
Symptom: Dead
Reprogrammed the 22 and 23 EPROMs with suicide free code. Modified the C board and Q-Sound boards. Replaced the 27C010 on the Q-Sound board with a 27C020 programmed with suicide free code.
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Model: Punisher
Symptom: Dead
Replaced 5 slow EPROMs with proper ones programmed with suicide free code. Modified the C board and Q-Sound boards. Replaced the 27C010 on the Q-Sound board with a 27C020 programmed with suicide free code.
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Model: Punisher
Symptom: Dead
Replaced 5 slow EPROMs with proper ones programmed with suicide free code. Modified the C board and Q-Sound boards. Replaced the 27C010 on the Q-Sound board with a 27C020 programmed with suicide free code.
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Model: CPS1 Games
Tip: ROM speeds
When reprogramming EPROMs to run the phoenix version of code on the CPS-1 boards, the EPROMs on the board may need replacing. The AMD EPROMs labeled -155 (155ns) and -175 (175ns) are just fast enough to run the regular code. When running the phoenix code on these EPROMs the game may crash randomly.
When using AMD EPROMs, use 120ns or faster for EPROMs running the phoenix code. Intel EPROMs rated at -15 (150ns) will run fine. Any AMD EPROMs that do not need reprogramming are fine to keep using.
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Model: Capcom CPS2 A board
Symptom: Low audio
Board shows the audio being up all the way in the test menu, but the audio is very low. Powered up the game with the volume down button held down to reset the audio levels. Adjusted audio and tested.
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Model: Super Street Fighter II Turbo (CPS2)
Symptom: Dead
Board would display a solid green screen. Removed battery and reprogrammed the EPROMs with the phoenixed version of code to resurrect the game. Tested.
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Model: Capcom CPS2 cartridged
Tip: Trouble when phoenxing
When the CPS2 carts are being phoenixed the chip that does the decoding sometimes has a corrupted key in memory. AFTER cutting the battery off the board, take something, such as a pair of hemostats or Kelly clamps and short across capacitor CCI for several seconds. This is the capacitor next to the positive lead of the battery. This will kill the battery backed memory on the cartridge and allow the phoenixed code to work as designed.
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Model: Street Fighter 2
Symptom: Graphics corruption
Game had corrupt player graphics and missing health bar segments. Replaced faulty A board and tested.
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Model: Saturday Night Slam Masters
Symtpom: Dead - Suicided
Modified the C-board and replaced the EPROM at position 23 of the B board with one programmed with suicide free code. Modified the Q-Sound board with a 4002 IC and replaced the 27C010 EPROM with a 27C040 programmed with suicide free code. Tested.
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Model: Marvel Vs. Capcom, Asia Region
Symptom: Dead
Removed the dead battery. Reprogrammed the game ROMs with the MVCA Phoenix code and tested.
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Model: Marvel Vs. Capcom, US Region
Symptom: Dead
Removed the dead battery. Reprogrammed the game ROMs with the MVCU Phoenix code and tested.
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Model: Captain Commando
Symptom: Dead
Performed suicide fix on C board and reprogrammed the 22 and 23 ROMs. Replaced a missing graphics ROM in socket 1. Tested board and found the game had corrupt graphics. 2 data lines on ROMs in sockets 1, 2, 5, and 6 were stuck low. Traced the problem back to a bad chip on the C board. Modified the C board from a Street Fighter II game that had the same chip (CPS-B-21) and installed it to fix the graphics problem. Tested board.
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Tip: Modifying C boards
Captain Commando uses the 90631C-5 labeled C board while some versions of Street Fighter II uses the 92631C-6 and they both have the CPS-B-21 chip on them. This version of SFII is easy to identify as it has the blank spot for the suicide battery on it.
To modify the SFII board cut the ground trace going to pin 42 and 44 of the CPS-B-21 chip. Pins 45 and 46 are already tied high so they do not need to be modified as on the Capt Commando C board. Install 1K SMT resistors at locations R1 and R2. These can be pulled from the bad C board and transferred over.
Ensure that there are no shorts between +5v and ground then install the board and test the game!
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Model: Punisher
Symptom: Dead
Game had suicided. Removed the 2 lithium batteries from it, modified the C board, and modified the Q-sound board. The existing EPROMs on the B board (-175) were too slow to be reused and were replaced with 120ns (-12) EPROMs programmed with suicide free code. Installed a replacement EPROM programmed with suicide free code on the Q-sound board.
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Model: Punisher
Symptom: Dead
Game had suicided. Removed the 2 lithium batteries from it, modified the C board, and modified the Q-sound board. The 5 existing EPROMs on the B board (-175) were too slow to be reused and all 8 were replaced with 2 x 16 bit, 120ns (-12) EPROMs programmed with suicide free code. Installed a replacement EPROM programmed with suicide free code on the Q-sound board.
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Model: X-Men COTA
Symptom: Dead
Board had suicided and battery has leaked. Removed battery and one capacitor. Cleaned battery damaged area and installed a new cap. Installed 8 EPROMs programmed with the phoenix code and tested.
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Model: Captain Commando
Symptom: Suicided
Removed battery, modified C board, and replaced 2 EPROMs with ones programmed with suicide free code. Tested.
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Model: CPS2 A board
Symptom: White screen
Board had damaged pins on one connector. Replaced bad connector and tested.
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Model: X-Men vs. Street Fighter
Symptom: RAM Error
The RAM error would follow the cart and not the A board. Replaced bad Object RAM (64K surface mount) at location 3A and 4A on the cartridge board. Tested.
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Model: King of Dragons
Symptom: Corrupt video
Board had sparkles and lines on the screen. If pin 24 on the Video RAM from P1 through P7 was touched the screen would go crazy with sparkles and dots. Removed corrosion on pins 41 and 42 of 2H on the A board and jumpered the two traces to the chip's solder pads. Tested.
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Model: Captain Commando
Symptom: Dead. Has physical damage
Replaced 1 broken 20 pin socket, 1 broken ferrite filter, and 1 missing PAL on the C board. Replaced 2 broken 4.7k resistor packs on the C board, straightened the kick harness connectors, then modified the C board to run with phoenix ROMs. Replaced 1 broken ferrite filter on the B board. Installed phoenix ROMs and tested.
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Model: 3 Wonders
Symptom: Garbage on screen. Locks up.
Replaced bad A board to fix graphic corruption. Modified the C board and installed phoenix ROMs to fix lockup/crashes. Tested by playing all three games to the end.
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Model: Punisher
Symptom: Dead
Modified C board and QSound board to work with phoenix ROMs. Installed phoenix ROMs and tested.
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Model: Knights of the Round
Symptom: Dead
Modified C board to work with phoenix ROMs. Installed phoenix ROMs and tested.
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Model: D&D 2 Shadow over Mystara
Symptom: Dead
Removed battery from board. Reprogrammed EPROMs with the Phoenix code. Game crashes. ROM10 was too slow and was replaced with a 120ns EPROM. Tested.
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Model: 3 Wonders
Symptom: No sound
Jumpered burnt trace under the Z80 sound chip. Replaced bad sound program ROM. Tested.
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Model: Final Fight
Symptom: Graphic corruption
Game had flashing sprites for some characters and objects.
C board was missing a signal on pin 41. Traced it back to a bad trace on the A board. Repaired trace and tested.
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Model: Cadillacs and Dinosaurs
Symptom: Dead
Board had suicided. Modified the C board and QSound board. Replaced 2 ROMs on the ROM board and one on the QSound board with phoenix code. Tested.
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Model: Super Street Fighter II Turbo
Symptom: Dead
A/B board set came from a local auction buy. Battery was rolling around inside cart.
Removed ROMs 3-8, erased them, and reprogrammed them with suicide free code. Board booted but had distorted sound and incorrect graphics. Programmed and installed missing BGSG1 PAL on daughter board. Reset improper jumpers JP10 through JP29 and board booted with proper sound and graphics. Tested game.
NOTES: BGSG1 PAL controls sound ROM decoding. BGSG2 PAL controls graphic ROM decoding. Board appears to have been a swap where someone was attempting to fix another cartridge. That's the only explanation I could think of for all the incorrect jumper settings and the missing PAL.
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Model: 1944
Symptom: Dead. Blue Screen.
Erased ROM 3 and reprogrammed it with suicide free code. Tested.
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Model: Dungeons and Dragons: Tower of Doom
Symptom: Dead
Reprogrammed ROMs 3, 4, 5, and 7 with suicide free code, and ROM 6 with European region code. Tested.
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Model: The Punisher
Symptom: Dead
Removed batteries from the C board and Q sound board. Modified both boards to use phoenix code and replaced the necessary EPROMs with faster ones using the phoenix code. Tested.
NOTE: Do not use any non-AMD EPROM slower than 150ns and AMD EPROM slower than 120ns when phoenixing CPS1 or CPS1.5 games as they will experience random crashes.
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Model: Captain Commando
Symptom: Dead
Removed battery and modified C board to use the phoenix code. Reprogrammed 2 EPROMs with phoenix code and tested.
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Model: Marvel vs. Capcom
Symptom: Dead
Cartridge had suicided.
Erased and reprogrammed the EPROMs with suicide free code and tested.
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Model: Marvel Super Heroes vs. Street Fighter
Symptom: Dead
Cartridge had suicided.
Erased and reprogrammed the EPROMs with suicide free code and tested.
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Model: Super Puzzle Fighter 2 Turbo
Symptom: Dead
Cartridge had suicided.
Erased and reprogrammed the EPROM 3 with suicide free code and tested.
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Model: Marvel Vs. Capcom
Symptom: Dead. Suicided.
Board had shipping damage - the solder pad for one of the battery terminals broke loose from the board.
Removed battery. Erased and reprogrammed ROM 3 and ROM 4 with suicide free code. Tested.
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Model: XMen vs. Street Fighter
Symptom: Dead
Reprogrammed ROM 3 and 4 with suicide free code, removed battery, reassembled, reset sound levels, and tested.
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Model: Final Fight
Symptom: Graphic Corruption
Replaced bad CPS-A-01 surface mount custom on the A board and tested.
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Model: Street Fighter II CE, Rainbow
Symptom: Reboots when fighting starts
Moved the ROMs over to a replacement B board, installed the board, and tested.
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Model: Strider
Symptom: Vertical lines in graphics
Board had corrosion issues from having a dirt dauber (wasp) nest on it.
Swapped out A and C boards to narrow it down to a B board problem. Cleaned the board and retested. Patched 2 damaged traces and tested.
Board was repaired as part of a "repair party" here in the shop. A walk-through of using a logic probe was done in tracing out where the data signals were missing. :)
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Model: Marvel Vs. Capcom (CPS2)
Symptom: Dead
Board had suicided. Programmed IC3 and IC4 with suicide-free code and tested.
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Model: Marvel Vs. Capcom (CPS2)
Symptom: Dead
Board had suicided and a pin on the A board was bent. Programmed IC3 and IC4 with suicide-free code, straightened the bent pin, and tested. Board had lines in foreground graphics and corrupted text. Patched a corroded plated-thru hole on pin 64 of the IC at 7M to fix the corrupted text. Patched a corroded trace on pin 74 of the IC at 7J to fix the lines in the graphics. Tested.
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Model: Street Fighter II
Symptom: Graphic corruption
Board was very dirty and had some dirt and corrosion in sockets. Cleaned the A, B, and C boards and reflowed the custom chip on the C board. Replaced 10 40pin sockets, cleaned the pins on the ROMs, and tested.
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Model: Street Fighter II
Symptom: Missing sound effects
Board played and had music but was missing the speech and effects.
Recapped the audio section and tested.
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Model: CPS1 A board
Symptom: No audio
Replaced bad Z80 CPU and tested.
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Model: X-Men vs. Street Fighter
Symptom: Customer requested the battery be removed.
Removed battery, reprogrammed ROMs 3 and 4 with suicide free code, and tested.
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Model: Saturday Night Slam Masters
Symptom: Dead
Modified C board and replaced ROM 23 with one programmed with suicide free code. Modified the Q-Sound board and replaced the ROM with suicide free code and added a 4002 IC between the A board and the Q-Sound board to finish the resurrection. Tested.
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Model: 3 Wonders
Symptom: Dead (Suicided)
Removed the battery from the C board and modified it to run with suicide free code. Erased and reprogrammed ROMs 30, 31, 35, and 36 with suicide free code and tested.
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Model: CPS 2 A/B Board combo w/Darksoft kit installed
Symptom: Broken pin on the A board and graphics corruption.
Installed a replacement connector from a donor board and tested. Board still had graphic corruption. Inspected board and found that 4 of the ROMs were missing signals on an enable pin. Patched 2 cut traces next to the solder jumpers on the board and tested successfully.
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Model: Street Fighter 2 CE+ (bootleg ROM hack)
Symptom: Convert back to SF 2 CE
Erased program ROMs 21, 22, and 23 then programmed them with the SF2CE ROM images from the MAME dumps. Tested.
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Model: XMen COTA
Symptom: Dead, Green screen.
Reprogrammed ROM 03 and 04 with suicide free code, removed, the battery, and tested.
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Model: Knights of the Round
Symptom: Dead
Removed the battery, reprogrammed ROM 23 with suicide free code, and modified the C board to work with the new code. Tested.
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Model: Saturday Night Slam Masters
Symptom: Dead
Performed suicide fixes on the C board, Q-Sound board, and installed the 4002 mod chip and connections to the A and B boards. Installed suicide-free ROMs and tested.
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Model: The Punisher
Symptom: Dead
Performed suicide fixes on the C board and Q-Sound board then installed suicide-free ROMs and tested. Board would flicker the backgrounds in and out beyond the end of the 4th stage and sometimes crash. Reflowed the C board and retested successfully.
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Model: Super Street Fighter II: The New Challengers
Symptom: Dead
Removed the battery, erased the program ROMs, and reprogrammed them with suicide free code. Tested.
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Model: Street Fighter II: Hyper Fighting
Symptom: Audio corruption
Audio would just play some beeps and the punch sound during attract mode.
CPU was locking up after attract mode. Checked board interconnects and they were good. Replaced the CPU (most likely culprit), but that wasn't it. Replaced bad Sound Program ROM at ROM 9 and tested successfully.
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Model: Saturday Night Slam Masters
Symptom: Dead
Removed the dead batteries then modified the C board and Q-Sound boards to accept suicide free ROMs. Replaced the Q-Sound ROM and ROM 23 and tested.
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Model: Super Street Fighter II X: Grand Master Challenge
Symptom: De-phoenix the board
Removed 7 program ROMs and replaced them with ones programmed with the original suicide code. Installed an infinikey then set the code for the game. Tested.
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Model: Vampire Savior: The Lord of Vampire
Symptom: Dead. Suicided.
Installed an Infinikey and tested. Foreground graphics were missing. Fixed 3 bent pins on board interconnect and retested successfully.
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Model: Alien vs. Predator
Symptom: Dead
Game was a conversion and someone had reflowed the large SMT chips.
Board booted and tried to play but would suddenly halt and proceed at a snail's pace. Reflowed one side of the CPU on the cartridge board and tested successfully.
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Model: Marvel Super Heroes
Symptom: Dead
Board had suicided.
Removed the battery, installed an Infinikey, and tested.
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Model: Marvel vs. Capcom
Symptom: Dead
Board had suicided.
Removed the battery, installed an Infinikey, and tested.
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Model: Mega Man
Symptom: Graphic corruption
Programmed a replacement IOB1 PAL using a GAL16V8B and tested.
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Model: Street Fighter II: CE
Symptom: Bad graphics corruption
Replaced broken RFI filter and tantalum capacitor on the C board and bad S9263B PAL on the B Board to fix sync and missing graphics problems. Replaced bad CPS-A-01 custom on the A board to fix the remaining graphic corruption problems. Tested.
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Model: 194x (CPS-2)
Symptom: Suicided
Installed and configured an infinikey and tested.
Note: Infinikey is a product that you configure for the specific game by soldering pads together. It injects the encryption key at power up and removes the need for reprogramming ROMs to suicide-free code and allows for the removal of the leak-prone lithium battery.
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Model: CPS2 A board
Symptom: High pitched squeal and some garbling of music
The problem followed the A board. Replaced bad surface mount DL-1425 Q-Sound chip and tested.
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Model: CPS1
Symptom: Bad Graphics
Isolated issue to the A board. Installed a replacement CPS-A-01 custom IC from a donor CPS2 A board and tested.
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Model: CPS2 A board
Symptom: bad colors
Replaced 2 shorted 74LS367 and 1 shorted 7407 chips in the video output section. Tested.
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Model: CPS2 A board
Symptom: Will not hold audio volume settings
Replaced bad supercap and tested after board sat for 12 hours and retested after another 51 hours.
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Model: Final Fight
Symptom: Graphics problems
Replaced 2 broken ferrite filters on the B board and a bad CPS-A-01 custom on the A board. Tested.
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Model: Knights of the Round
Symptom: Missing graphics
Battery was dead and I'm surprised the game even tried to run.
Removed battery, modded the C board, and reprogrammed ROM 23 with suicide free code. Tested.
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Model: Forgotten Worlds
Symptom: Dead. Short circuit.
Replaced shorted tantalum capacitor on the +12v line and tested.
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Model: Street Fighter II World Warrior
Symptom: Graphic corruption
Reflowed CPS-A-01 custom and repaired a gouged trace. Tested.
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Model: Street Fighter II Hyper Fighting
Symptom: Flickering characters and screen elements
Swapped PCBs with a shop set and determined the A board was good. Replaced bad CPS-B-21 chip on the C board and tested.
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Model: Punisher
Symptom: Dead. Suicided.
Phoenixed the C and Q-Sound boards. Tested. No video sync. Patched burned video ground trace and informed customer to double-check the monitor in the cab. If the monitor chassis requires an isolation transformer and the cabinet doesn't have one then this kind of damage can occur.
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Models: MANY
Symptom: Install Infinikey mod chips
Dead:
Marvel Vs. Capcom (Japan): Removed battery. Installed Infinikey and tested
Capcom Sports Club (Asia): Removed battery. Installed Infinikey and tested
Alive, but still wanted Infinikey:
Super Gem Fighter Mini Mix (Asia): Removed battery. Installed Infinikey and tested
Street Fighter Zero 3 (Japan): Removed battery. Installed Infinikey and tested
Marvel Vs. Street Fighter (Japan): Removed battery. Installed Infinikey and tested
Marvel Vs. Capcom (Japan): Removed battery. Installed Infinikey and tested
Pocket Fighter (Japan): Removed battery. Installed Infinikey and tested
Marvel Vs Capcom (Black 1 piece) (Japan): Removed battery. Installed Infinikey and tested
Super Gem Fighter Mini Mix (Asia): Removed battery. Installed Infinikey and tested
Marvel Vs. Capcom (Japan): Removed battery. Installed Infinikey and tested
X-Men vs. Street Fighter (South America): Removed battery. Installed Infinikey and tested
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Models: Many CPS2
Symptom: Install Infinikey mod chips. Fix A boards as needed
Marvel Super Heroes vs. Street Fighter (Japan): Removed battery. Installed Infinikey and tested
Capcom Sports Club (Asia): Removed battery. Installed Infinikey and tested
Marvel Super Heroes vs. Street Fighter (Japan): Removed battery. Cleaned PCB and verified it was dead. Customer will install Darksoft kit on this one.
CPS2 A board: Replaced dead fan and tested
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Model: CPS2 A board
Symptom: Corrosion damage
Cleaned edge connector. Replaced kick harness connector and both RCA jacks. Replaced the 3 snap switches and 3 of the 4 cartridge connectors. Tested. Patched 2 dead traces for the up and down volume snap switches. Tested.
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Model: Street Fighter II WW
Symptom: Dead
Replaced broken ferrite filter on the B board. Board booted without sync. Replaced bad 74LS08 on the B board to restore sync. Tested.
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Model: Street Fighter II WW
Symptom: Dead
A board was dead. Replaced CPS-A-01 custom IC with one from a donor CPS-2 A board. Tested.
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Model: SF II: WW
Symptom: No red
Jumpered damaged trace in the video output section. Tested.
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Model: SF II: WW
Symptom: Graphics and sound corruption.
Cleaned A board interconnect pins, replaced the Sound Program ROM socket, and cleaned the pins on the Sound Program ROM. Tested. Audio was now solid. Cleaned the legs on the STF29 PAL on the B board to fix graphics issues. Tested.
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Model: CPS2 A board
Dead. Garbage on screen
Board had attempted repairs done - the Z80 was socketed.
Checked the Z80 and found pin A13 was shorted to ground. Replaced bad SMT 74LS245 chip at A13 and tested. No sound. Replaced bad Z80 and tested.
The bad Z80 chip was counterfeit. The sanding marks from the chip going through a remarking process were clearly visible.
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Model: CPS2 A board
Symptom: Bad colors
Repaired bent pin on one of the board interconnects. Patched the green video output trace in two places. Tested.
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Model: CPS2 A board
Symptom: Dead
Cleaned very dirty edge connector. Replaced the three tactile switches and the case fan. Repaired 2 case standoffs. Tested.
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Model: CPS 1: SF II Hyper Fighting
Symptom: No sound
Audio amp IC had a hole in it
Replaced audio amp IC, 1 4.7uf cap, and 2 100uf caps. Tested.
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Model: Marvel vs. Capcom
Symptom: Infinikey
Removed battery, installed Infinikey, and tested. Replaced fan in the A board assembly. Retested.
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Model: CPS3
Symptom: Fried diode on SCSI port
Removed diode, cleaned pads, and installed a replacement. Tested.
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Model: Street Fighter II: Red Wave hack
Symptom: No sound
Replaced bad sound Z80 and tested.
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Model: CPS2 A board
Symptom: Broken button plastics
Replaced button plastics and repaired broken shell. Tested.
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Model: CPS2 A board
Symptom: Broken button plastics
Replaced button plastics, replaced three SMT switches, repaired broken shell, and tested. Patched 4 corroded traces at the JAMMA edge connector. Tested.
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Model: CPS2 A board
Symptom: Broken button plastics
Replaced button plastics and tested.
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Model: CPS2 A board
Symptom: Broken button plastics
Replaced button plastics and tested.
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Model: CPS2 A board
Symptom: Broken button plastics
Replaced button plastics and tested.
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Model: CPS2 A board
Symptom: Work RAM NG
Repaired multiple broken molded-in standoffs on the A board bottom case. Reassembled and tested.
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Model: Super Street Fighter II Turbo
Symptom: Very low audio
Opened A board and tested switches. Volume up and volume down switches were bad. Replaced switches and tested game.
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Model: Justice Gakuen: Legion of Heroes
Symptom: Clean up wiring hacks
Capcom ZN-2 series.
Replaced the CPS2 style kick harness connector, 4 broken ferrite filters, and removed 4 jumper wires from JAMMA edge connector. Cleaned up edge connector and pins of solder from where the wires were connected. Tested.