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Author Topic: Nintendo Arcade  (Read 27551 times)

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Offline channelmaniac

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Re: Nintendo Arcade
« Reply #40 on: August 24, 2016, 07:58:18 PM »
Model: Donkey Kong
Symptom: Dead. Garbage on screen.

Reprogrammed the ROMs at 5A, 5B, 5C, and 5E. Tested and found many sounds missing. Cleaned the tarnished legs on the sound CPU, replaced the corroded EPROM and socket at 3H, and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Re: Nintendo Arcade
« Reply #41 on: November 03, 2017, 05:52:22 PM »
Model: Playchoice 10
Symptom: Background graphic corruption.

Replaced a bad 74HC373 next to the PPU IC and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Nintendo Arcade
« Reply #42 on: January 30, 2018, 09:01:42 PM »
Model: Donkey Kong
Symptom: Dead

Checked EPROM checksums using an EPROM programmer and WinROMIdent.  Connected the Fluke 9010A and found a bad 2114 RAM. Replaced the RAM and finished the RAM tests with the Fluke. Board now boots and plays but had graphic corruption. Cleaned tape residue off of the legs of an EPROM on the bottom board and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Nintendo Arcade
« Reply #43 on: February 07, 2018, 10:13:55 PM »
Model: Mario Bros
Symptom: Dead

Board had sound but no video. RAMs were not active on the bottom board and clocks were dead. Replaced shorted 74S74 at location 2T in the clock circuit and tested the game.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Re: Nintendo Arcade
« Reply #44 on: March 10, 2018, 09:14:00 PM »
Model: Donkey Kong (2 board set)
Symptom: Dead. Severe corrosion problems

Board had severe rodent damage.

Replaced CPU board with a stripped one from the parts pile. Moved over the 2 CPUs to the replacement board then installed 4 freshly programmed Program ROMs and 2 freshly programmed Sound ROMs. Tested board. Board worked, but sound did not and colors were off. Replaced 2 incorrect color PROMs (for a conversion game) with 2 new programmed 82S129 bipolar PROM and cleaned the 8035 CPU legs. Retested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Offline channelmaniac

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Re: Nintendo Arcade
« Reply #45 on: March 14, 2018, 12:14:27 AM »
Model: Popeye
Symptom: Missing parts

Board was partially parted out when I received it. It was missing the custom ALU, CPU, Sound IC, and all the EPROMs.

Replaced the CPU board with another parts board that had the custom ALU and sound IC installed. Replaced one broken ROM socket on the CPU board and one on the video board. Cleaned the edge connector. Installed a Z80A CPU and 4 freshly programmed 2764 EPROMs on the CPU board and 4 2764 along with 1 2732 on the video board. Cleaned the PROM and PLA legs then tested the board successfully.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Nintendo Arcade
« Reply #46 on: March 25, 2018, 07:05:38 PM »
Model: Vs. Super Mario Bros.
Symptom: No green output

The board had no green output until it was on for a couple of minutes then the green output would suddenly work. Replaced bad 4066 quad switch and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Re: Nintendo Arcade
« Reply #47 on: May 22, 2018, 08:32:31 PM »
Model: Donkey Kong
Symptom: Sounds are incorrect

Jump sound was bad. Replaced C24 and tested. Game played but played the incorrect digital sounds. Replaced bad 74LS367 at 4E and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Offline channelmaniac

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Re: Nintendo Arcade
« Reply #48 on: August 13, 2018, 07:11:49 PM »
Model: Donkey Kong
Symptom: Graphic corruption of sprites

Sprites were in the wrong location and were made up of incorrect graphic elements. Checked the RAMs with a Fluke 9010A and they all tested good. The 74283 and other chips in the positioning circuitry were good. The 82S09 RAM is one the Fluke cannot test and it had good inputs, but bad output signal on pin 25. Replaced the RAM and tested the game.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Nintendo Arcade
« Reply #49 on: March 03, 2019, 02:16:55 PM »
Model: Donkey Kong
Symptom: Dead. Will not boot.

Reprogrammed the 4 corrupt Program ROMs and it would boot but would crash when trying to draw the screen. Replaced the 2 ribbon cable connectors on the CPU board as they had corroded pins and the 2 ribbon cables. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Offline channelmaniac

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Re: Nintendo Arcade
« Reply #50 on: March 03, 2019, 02:19:32 PM »
Model: Donkey Kong
Symptom: Screen corruption

Game would try to play but could not draw the girders or other background elements properly. Sprites were OK.

Replaced 2 bad 2114 RAMs, which cleaned up some corruption, but not much. Replaced bad 74LS157 at location 3S to fix the issue and tested.

The chip was a Fujitsu and failed on pin 1. The chip is a 2-to-1 data selector but wasn't selecting the inputs as pin 1 toggled. It only bridged input 2 to the output.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #51 on: July 02, 2019, 09:26:47 PM »
Model: Donkey Kong
Symptom: Garbage on screen

Replaced 74LS245 and LS273 on the video board to fix a stuck bit issue. Replaced one incorrect program ROM (bootleg game) with one programmed with Donkey Kong code. Tested. Game had no sound. Found the sound CPU was installed backwards. Removed and reinstalled the sound CPU correctly and tested the game successfully.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #52 on: July 02, 2019, 09:28:30 PM »
Model: Donkey Kong Jr
Symptom: Graphic corruption and incorrect colors.

Cleaned the legs on the video output PROMs and replaced the PROM on the video board as it had a broken leg. Board booted but would randomly crash and had no sound. Tapping on the CPU would cause it to crash. Cleaned corroded CPU legs and tested. Replaced bad sound CPU to fix sound issue. Replaced bad ribbon cables to fix the graphics issues. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #53 on: January 07, 2020, 08:30:49 PM »
Model: Donkey Kong Jr
Symptom: Dead. Flickering text on screen.

Replaced one bad 2114 RAM chip in text section to fix flickering text issue. CPU Bus is dead. Cleaned corroded pins on the Z80 CPU and the bus sprang to life, but sill crashed with 2 bits stuck low. Replaced bad 2114 RAM on the CPU board to fix the stuck bus, but game would crash because of corroded/damaged pins on the program ROMs. Replaced all 3 program ROMs and game would run and play, but with no music and no sprites.

Replaced corrupt sound program ROM and bad 8035 sound CPU to fix music issues. Replaced bad 8275 DMA Controller to fix the missing sprites issue. Burned in boardset and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #54 on: March 30, 2020, 09:14:49 PM »
Model: Dual Vs board.
Symptom: Won't boot Dr. Mario

Board arrived with the PPU for vs. RBI Baseball half ripped out of its socket. Carefully straightened the pins on the PPU and reinserted it. Tested the game and the Dr. Mario would not boot. Swap games around and the RBI Baseball would boot, but had horrid colors. The Dr. Mario booted and played fine on the other side. Replaced the PPU and CPU sockets on the left side, cleaned the edge connector, put the games back where they were initially and booted successfully. Played a few games to test.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #55 on: April 08, 2020, 05:08:43 PM »
Model: Vs. Baseball
Symptom: Dead. Bad corrosion damage.

Removed the following corroded components, mostly from the right side of the board: 14 logic chips, 10 sockets, and 2 RAMs. Cleaned and inspected the board. Installed the following replacement chips and sockets: 2x LS32, 1x LS00, LS74, LS04, F04, 2x LS138, LS245, LS373, 2x LS157, 6116 SRAM, and 6264 SRAM. Installed sockets for the 4 Program ROMs, 2 Graphic ROMs, CPU, and PPU. Patched 1 open trace and installed a missing transistor in the Green color output for the right side.

Vs. Baseball requires both sides of the board and the PPU for the right side was trashed by corrosion. Programmed replacement ROMs for Vs. Pinball and installed that on the right side. Moved the CPU and PPU for Vs. Baseball to the right side. Installed a PPU and CPU on the left side and programmed replacement ROMs for Score and Match Golf which matched the PPU revision. Tested board.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #56 on: April 08, 2020, 09:42:48 PM »
Model: Donkey Kong 3
Symptom: Dead. Garbage on the screen.

Program ROM 7B and 7C were corrupt. Program ROM 7C was rewritten while program ROM 7B failed and was replaced. Both sound ROMs were corrupt and unable to be reprogrammed so they were replaced.

The board would boot and play but had vertical strips of missing moving characters. The blank spaces had some flashing to them which pointed to an open trace on the board. Found an open input on the 74LS00 at 4K, pin 2. That was connected to the 82S09 RAM and through a broken trace to an LS30 at 5P. Fixed the trace to finish the repair.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #57 on: April 11, 2020, 11:28:53 PM »
Model: Donkey Kong
Symptom: Dead

Board was badly sun bleached.

Every EPROM on the CPU board was blank and had to be reprogrammed. The board was still dead and missing the CPU clock. Replaced a corroded P2 connector on the CPU board and the ribbon cable connected to it. Replaced a 74LS367 on the video board with a stuck output restoring the CPU clock. The CPU was still dead. Patched a dead trace on a data line between two of the 2114 RAMs to fix the CPU issue. The board booted up, but with bad colors.

Removed and socketed a 74LS174 in the video output circuitry and patched multiple dead traces on it to fix the color output then tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #58 on: April 18, 2020, 08:56:35 PM »
Model: Playchoice 10
Symptom: Will not play carts

Unit had a bad PPU, but the owner said they had a spare so popped the shop PPU in and started the repair.

Patched a dead trace on the 74LS245 next to the CPU. Pin 18 of the LS245 had no signal on it. Found an open trace between slot 1 and slot 2 (cart was in slot 2) and patched it. Tested and patched multiple traces on the slots then tested a cart in each slot. Every slot worked, except for slot 5. Patched a trace between pin A29 and the 74LS42 decoder chip responsible for slot selection. Tested
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Nintendo Arcade
« Reply #59 on: May 10, 2020, 12:05:04 PM »
Model: Donkey Kong / Special Forces
Symptom: Dead. Physical damage. Deconvert.

Board was converted to Special Forces by Magic / Senko

Replaced bad ribbon cable next to CPU sockets, resoldered broken cap in the reset circuit, repaired broken wire on graphics ROMs, and replaced broken Vertical pot. Tested successfully. Removed CPU add-on board, ROMs, and bipolar PROMs from the PCB. Installed new Z80 and 8035 CPUs and sockets. Programmed and installed a whole ROM set and 3 replacement Bipolar PROM chips. Tested Donkey Kong and found the jump sound was incorrect. Replaced bad capacitor at C24 and retested successfully.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

 

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