GORF Video and Synthesized Speech Issues

rgphillips

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My newly acquired GORF has a couple of issues I need help resolving. The first is the 1st mission (space invaders) background screen and characters are too dark (see photo). Mission screens 2-5 and all other characters are perfectly displayed.

The second issue there is no synthesized speech during game play. Could this be a board issue?

Any suggestions on how to repair these issues would be appreciated. Thank you.

a9f8f3820b5d66230610e1ecce83f38a.jpg
a9f8f3820b5d66230610e1ecce83f38a.jpg
 
First issue, is odd if it's not right for the first wave but ok for other waves. Anything show up in Self Test?

Second issue. There are two volume pots. One for sound effects and the other for speech. Make sure your speech volume is up.
 
First issue, is odd if it's not right for the first wave but ok for other waves. Anything show up in Self Test?

Second issue. There are two volume pots. One for sound effects and the other for speech. Make sure your speech volume is up.


Thank you for your suggestions.

1. The test screen is unreadable. Screen was dark, same issue as the first mission screen.

2. I turned the speech volume pot up but I couldn't hear anything during game play.
 
Have you pulled the cards out and reseated them? I would start with that as the card cage on those sucks and might cause strange problems. I also hit them with a bit of contact cleaner.

Probably won't fix your issue, but doesn't hurt :D
 
Speech problems are usually caused by a bad SC-01 speech chip... unfortunately, they're hard to find, and expensive when you do find them. :(

DogP
 
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