A Smash TV I'm working on was having some sound issues - sounds played, but they were not the correct ones. Otherwise, gameplay was perfect.
I replaced the EPROMS U4, U19 and U20 on the sound board with newly flashed ones, plugged it back in, and now I'm getting a Custom Chip U99 error, and the game is far worse off. Crap! (note that I re-swapped the EPROMS to the original set and the new errors persist).
See photo - the image is confined to the corners of the screen only and is corrupted. It accepts credits and the controls work in game, but the sounds are still playing incorrectly to boot. Here's a clip of gameplay:
https://youtu.be/WMtxnTh_qZk
Can the U99 be replaced? Mine is socketed, so if I can find one from a gracious KLOVer, maybe?
Could something else be going on?
I replaced the EPROMS U4, U19 and U20 on the sound board with newly flashed ones, plugged it back in, and now I'm getting a Custom Chip U99 error, and the game is far worse off. Crap! (note that I re-swapped the EPROMS to the original set and the new errors persist).
See photo - the image is confined to the corners of the screen only and is corrupted. It accepts credits and the controls work in game, but the sounds are still playing incorrectly to boot. Here's a clip of gameplay:
https://youtu.be/WMtxnTh_qZk
Can the U99 be replaced? Mine is socketed, so if I can find one from a gracious KLOVer, maybe?
Could something else be going on?
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