Konami Repairs

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channelmaniac:
Model: Gyruss
Symptom: No sound. Missing heatsinks. White line on top of screen.

Replaced bad audio amplifier and 4 100uf capacitors. Installed 2 heatsinks. Resoldered pulled cap on IC at A6 and cleaned the legs on the 3 PROMs to fix the video issue. Tested.

channelmaniac:
Model: Track and Field
Symptom: Corrupt graphics and speech.

Cleaned the speech ROM's legs and replaced the corroded socket. Jumpered a gouged trace on pin 2 of the 2128 SRAM chips. Tested.

channelmaniac:
Model: Track and Field
Symptom: Dead

Cleaned pins on the CPU and replaced bad socket. Cleaned pins on the ROMs at A1/A2. Board booted but had corrupt graphics. Replaced a bad 74LS377 to fix the graphics corruption. Graphics were misplaced horizontally and runner would run off the right side of the screen during the long jump on attract. Replaced 74LS08 @ 2F which had a dead output. Replaced 74LS139 at 14D which had a dead output to fix the graphics misplacement. Replaced bad 74LS273 at 13E to fix a background color problem. Tested.

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