Author Topic: Konami Games (Read 44618 times)

channelmaniac · « **Reply #80 on:** March 31, 2019, 05:15:11 PM »

Model: Jurassic Park 3
Symtpom: RTC Error

Replaced the RTC chip with a fresh one that was programmed with the code from the MAME archives. Tested.

channelmaniac · « **Reply #81 on:** April 13, 2019, 11:50:17 PM »

Model: Time Pilot
Symptom: No sound, possible sprite corruption

Replaced bad LA4460 sound amplifier IC and tested. Board would occasionally flake out on the background and motion of the enemy ships. Fixed a bent pin on a custom IC and tested.

channelmaniac · « **Reply #82 on:** April 13, 2019, 11:52:12 PM »

Model: Gyruss
Symptom: Dead

Replaced a bad 74LS157 at 9J. Game would then boot but had graphic corruption on enemy ships in attract/play modes and the earth on the title screen. Cleaned pins on 2 custom ICs and replaced the 082 and 083 as they had multiple broken pins. Cleaned the legs on the graphics ROMs and tested. Replaced audio amp IC to fix missing audio. Retested.

channelmaniac · « **Reply #83 on:** April 29, 2019, 09:49:21 PM »

Model: Jail Break
Symptom: Dead

Replaced bad CPU, 74LS138, and 74LS244. Tested. Board had graphic corruption. Replaced the ROM sockets and retested successfully.

channelmaniac · « **Reply #84 on:** April 30, 2019, 07:30:05 PM »

Model: Rush'n Attack
Symptom: Yellow characters visible outside the screen border

Video output wasn't being suppressed during horizontal retrace for the color yellow. This was seen during the title screen and during game play where you would get an advanced warning of characters about to enter the screen. Replaced a bad color PROM on the video output and tested.

channelmaniac · « **Reply #85 on:** December 27, 2019, 04:10:02 PM »

Model: Time Pilot
Symptom: Graphic corruption.

Replaced bad 74LS86 at E6 and tested.

channelmaniac · « **Reply #86 on:** December 27, 2019, 04:11:54 PM »

Model: Time Pilot
Symtpom: Black screen / no boot

Cleaned the custom chip and ROM legs. Patched broken pins on 2 chips, replaced the EPROM at F11, and replaced the socket on the custom at C12. Tested.

channelmaniac · « **Reply #87 on:** March 27, 2020, 08:20:20 PM »

Model: Track & Field
Symptom: Dead. No picture

Note: This was the unencrypted ROM model that has no schematics.
jammarcade.net has a version of the test ROM that will work on this board.

Replaced a shorted 74LS161 in the clock divider circuit to restore video. Replaced a shorted 74LS245 between the CPU and ROMs and another between the CPU and the RAM to fix boot problems. RAM tests passed using the test ROM, but board had horizontal lines on the screen on every other trace line. Replaced a shorted 2148 RAM in the video output circuit to fix lines on the screen. Replaced a dead 2114 RAM on the sound CPU to restore sound. Tested.

channelmaniac · « **Reply #88 on:** April 14, 2020, 09:12:56 PM »

Model: Time Pilot
Symptom: Graphic corruption and no sound

Board would intermittently boot or not boot on start up. Replaced the 3 program ROM socket and 2 corroded sockets in the graphics section. Cleaned the pins on all the socketed chips. Replaced a bad 2148 RAM to fix the graphics issue. Replaced bad sound ROM to fix the sound section. Replaced 2 leaking 1000uf electrolytic caps and tested.

channelmaniac · « **Reply #89 on:** June 19, 2020, 10:55:05 PM »

Model: Simpsons
Symptom: Graphic corruption in sprites

Replaced the 053246, 053247, and 053251 custom ICs. Graphic corruption improved, but worsened over time on the bench. Replaced 4 bad 74LS374 chips between the customs and the Mask ROMs for sprites. Tested. Graphic corruption returned as a 5th 74LS374 failed. Went ahead and replaced the last 4 to finish out replacing all 8 of the 74LS374 chips and retested. The failed ones were all SGS brand.

channelmaniac · « **Reply #90 on:** June 19, 2020, 10:56:50 PM »

Model: X-Men
Symptom: Dead

Jumpered 3 bad traces and tested. Board would then boot but freeze after passing the self tests and reboot. Jumpered a 4th bad trace between Data Line D7 and the hybrid sound module to finish the repair. Tested.

channelmaniac · « **Reply #91 on:** June 28, 2020, 11:08:23 AM »

Model: Hyper Sports
Symptom: Dead. Humming noise from speakers.

Cleaned pins on the customs on the video board. Replaced multiple dead Fujitsu 74LS244 chips at A1, B1, G1, J1, D6, H11, H12, and C19. Board booted with corrupt graphics and humming noise from speaker. Replaced multiple bad Fujitsu 74LS157 chips at D15, D16, C17, D17, and E17 to fix player sprites. Replaced a bad 74LS157 at G7 to fix background issues. Replaced bad 74LS138 at C18, bad 2114 RAM at C16, and 74LS08 at B2 to fix audio hum and restore audio. Board would play, but the speech was playing far too fast. At this point the board died. Replaced bad 74LS138 at H14 to bring the board back, but the speech was now not only too fast, but playing the wrong samples. Replaced bad 74LS393 at A3 to fix speed issue and bad 74LS374 at C14 to fix the sound sample issue. Tested.

channelmaniac · « **Reply #92 on:** August 05, 2020, 05:46:41 PM »

Model: Turtles in Time
Symptom: RAM Errors
Replaced 2x 2k x 8 SRAMs at 13D and 14D and 8k x 8 at 18H to fix the RAM errors. Board booted but had corrupt sprites and graphics. Replaced 2x ROMs at 3L and 7L plus partial reflow of 7J and 3J to fix that. Inputs tested stuck. Replaced a broken 005273 custom resistor/capacitor pack.

Game would then boot but had bad sound. Replaced the PAL at 5D, 053250 custom, corroded Sound ROM, and multiple shorted gates: 74ALS32 at 15D, 74LS08 at 18E, 74F74 at 19E, 74LS04 at 19F, 74ALS04 at 18F, 74F74 at 14G, and 74LS74 at 5F.

Tested.

channelmaniac · « **Reply #93 on:** August 05, 2020, 05:50:59 PM »

Model: Turtles in Time
Symptom: Dead, flashing white screen.

Game was stuck in watchdog. Replaced a bad 04 ROM at 10E. Tested Work RAM out of circuit. Found floating pin 1 of the 053997 Address Decoding PAL at 5E. Patched bad trace and tested. Game played but had no sound. Found floating pin 17 on the 053260 sound custom, which is what tells the chip to latch the data from the main CPU. Patched the trace and had audio signals coming out of the YM2151 and sound DAC, but no audio from speakers. Pulled the audio heat sink and discovered the amplifier chip soldered in backwards. Removed and reinstalled the audio amp chip to restore sound and tested game.

channelmaniac · « **Reply #94 on:** August 25, 2020, 06:39:23 PM »

Model: Hyper Sports
Symptom: Garbage on screen. No sync.

Cleaned very dirty edge connector and reseated one custom IC with tarnished legs. Board booted with vertical lines on screen. Replaced missing 74LS244 at C19. Game booted and played but with some garbage on screen. Replaced bad RAM at G9 and tested.

channelmaniac · « **Reply #95 on:** November 20, 2020, 06:50:10 PM »

Model: Circus Charlie
Symptom: Blocky graphics during trapeze section.

Cleaned corroded ROM legs and tested.

channelmaniac · « **Reply #96 on:** November 28, 2020, 01:18:32 AM »

Model: Martial Champions
Symptom: Stuck in boot loop

Hybrid module was cracked, causing the sound check to fail and self test to fail/reboot, putting the board in an endless loop.

Replaced the hybrid module with one created by user cwispy of the Aussie Arcade forum. Board would boot/play, but had color glitches in the background graphics that would change when 3 customs were tapped. Reflowed customs at 8J, 14J, and 14K to fix background graphic glitches. Cleaned excess solder from the JAMMA edge connector and tested.

channelmaniac · « **Reply #97 on:** December 03, 2020, 04:30:53 PM »

Model: X-Men
Symptom: Stuck in test mode reboot

Board had multiple pulled traces from an attempted repair of the hybrid module.

Pinned out the hybrid module, patched traces, installed a new hybrid from Aussie Arcade forum member cwispy (VERY nice quality!), patched 2 more traces to the hybrid, patched a trace from the CPU to the sound ROM, and tested.

channelmaniac · « **Reply #98 on:** December 05, 2020, 06:28:19 AM »

Model: X-Men
Symptom: Dead. Missing parts.

Board was previously a donor to fix a Simpsons and other PCBs.

Installed missing 053246, 053247, and 053251 custom ICs, 1000uf @ 15v capacitor, LM358 audio amplifier IC, and tactile test switch. Installed an aftermarket sound hybrid using chips from a donor Run-and-Gun PCB. Tested.

channelmaniac · « **Reply #99 on:** December 23, 2020, 08:02:04 PM »

Model: Roc'N Rope
Symptom: Left and Right control issue

Move left, it moves left. Move right, it moves left. Replaced bad 74LS253 at D4 and tested. Replaced 2 physically damaged 1000uf capacitors and retested.

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Author Topic: Konami Games (Read 44618 times)