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Author Topic: Atari Games (Arcade)  (Read 24984 times)

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Offline channelmaniac

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  • Few things are better than fixing an old game...
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Re: Atari Games (Arcade)
« Reply #40 on: May 22, 2017, 10:09:15 PM »
Model: Centipede
Symptom: Dead

Cleaned corroded legs on the Program ROMs, Video ROMs, CPU, and POKEY chips. Tested. Repaired a burnt edge connector and retested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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  • Few things are better than fixing an old game...
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Re: Atari Games (Arcade)
« Reply #41 on: August 28, 2017, 05:45:22 PM »
Model: Sprint II
Symptom: Dead. Garbage on screen.

Repaired broken leg on program ROM 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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  • Few things are better than fixing an old game...
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Re: Atari Games (Arcade)
« Reply #42 on: April 28, 2018, 03:59:02 PM »
Model: Centipede
Symptom: Dead

Replaced broken 12.096MHz crystal and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #43 on: April 28, 2018, 03:59:45 PM »
Model: Centipede
Symptom: AAA on lower screen

Received 7 beeps in test mode indicating bad RAM at M7. Replaced the 2101A RAM at M7 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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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #44 on: April 28, 2018, 04:01:14 PM »
Model: Centipede
Symptom: No sync

Board had no horizontal sync. Traced back the missing signals to the 74LS74 at 3M. Pin 1 was stuck low. Traced that back to the other half of 3M. Replaced the IC at 3M 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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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #45 on: April 28, 2018, 04:02:15 PM »
Model: Centipede
Symptom: Damaged DIP switches and a burned edge connector. Otherwise, untested.

Replaced the broken bank of 4 DIP switches and repaired the burned edge connector trace with copper tape. 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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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #46 on: June 03, 2018, 07:18:26 PM »
Model: Centipede
Symptom: Tearing graphics and sync issues

Replaced bad 2102A RAM at K5 to fix graphics RAM error beep. Replaced 74LS04 IC and bad socket with a proper 74S04 and a new socket. Replaced crystal as it had loose legs. Board played with incorrect colors and no sound. Replaced bad LM324 to restore sound and the 74S289 color RAM to fix the screen color issue. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #47 on: June 22, 2018, 04:22:15 PM »
Model: Millipede
Symptom: Dead. Garbage on screen

Game had 2 dead GTE 2114 RAMs. Replaced them and it still wouldn't boot. ROMs checked OK. Looked under the CPU and POKEY sockets and found 2 shorted traces under one POKEY caused by someone with a careless screwdriver lifting chips. Removed the solder short with a hot iron and a bit of liquid rosin flux and tested the game.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #48 on: September 09, 2018, 08:43:14 PM »
Model: Dig Dug
Symptom: Dead. Missing parts.

Replaced the three missing CPUs and tested. Reseated the 08xx IC on CPU3 and played a game to test the board.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #49 on: December 21, 2018, 03:54:43 PM »
Model: Gauntlet Dark Legacy
Symptom: Will not boot unless edge connector is pulled up hard.

Cleaned burned edge connector contacts on the +5v line and repaired them with copper trace tape. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #50 on: January 06, 2019, 12:52:57 AM »
Model: Centipede
Symptom: Enemy dive bombs immediately killing players

Self test gave 4 beeps. The RAM was good at K5 and signals were all present so it was a process of elimination to find the 74LS157 @ P5 was bad. Replaced IC 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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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #51 on: January 06, 2019, 12:55:38 AM »
Model: Dig Dug
Symptom: Burned edge connector

Repaired the burned edge connector with copper trace tape. Tested the game.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #52 on: February 10, 2019, 06:58:07 PM »
Model: Centipede
Symptom: Dead

Installed a missing PROM at P4. Game booted to a white screen. Cleaned the legs on the character ROMs and board would boot but was stuck in watchdog. Replaced bad CPU socket 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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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #53 on: February 10, 2019, 08:36:29 PM »
Model: Centipede
Symptom: Moves left/right but not up/down

Replaced 74LS74 at D11 that had a stuck output. Reset DIPs 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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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #54 on: February 10, 2019, 10:24:11 PM »
Model: Centipede
Symptom: Dead. Multiple chips missing.

Replaced a missing 14585 at E/F-11, missing 74LS157 at D/E-11, missing 74157 at D8, and a bad 7489 RAM in the video output section at C8. Reset DIPs 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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  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #55 on: April 18, 2019, 03:09:13 PM »
Model: Dig Dug
Symptom: No sync

Replaced bad 74LS368 and 74LS00 in the sync circuit. Tested.
« Last Edit: May 17, 2019, 09:27:30 PM by channelmaniac »
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #56 on: May 17, 2019, 09:29:44 PM »
Model: Dig Dug
Symptom: Dead. Missing chips.

Board was missing a 2114 RAM and a 2148-55 RAM

Replaced missing RAM and tested. Board threw a 2L error and had sparkling garbage on the screen. Removed a solder splash short from between a 2 chip legs and under the chip. This fixed the sparkling but every other RAM tested bad one by one so all 6 of the 2114 RAMs were replaced. Tested and burned in the board for several hours.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #57 on: March 09, 2020, 06:01:23 PM »
Model: Centipede
Symptom: Stuck colors on output. Missing text and non-motion characters.

Replaced a bad 74LS42 at location H3 that had a stuck output on pin 6. This caused the /COLORAM signal to be stuck high and the colors to never change on screen.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • NLG Member 501 to 10,000 Posts
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  • Posts: 2472
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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #58 on: April 10, 2020, 11:57:45 PM »
Model: Skull & Crossbones
Symptom: Garbage on screen. Fails RAM tests

Resoldered a broken resistor back into place feeding +5v to the CS2 line on the playfield RAMs. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Posts: 2472
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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
    • Arcadecomponents.com - Looking for hard to find chips?
Re: Atari Games (Arcade)
« Reply #59 on: November 27, 2020, 03:14:56 PM »
Model: Dig Dug
Symptom: Dead

Replaced missing crystal and tested. Board was stuck in a reboot loop. Reseated an auxiliary Z80 CPU that wasn't properly inserted in the socket. Board would then boot but had a graphic corruption issue. Fixed bent leg on a ROM chip and reinserted it into the PCB. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

 

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