Q*Bert sound issues with video

shertz

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My Q*bert game is having sound issues. It either plays the wrong sounds, half a sound or no sound at all. The sound will work then after a while the sound will completly die out and so does the knocker. Also, I noticed the the monitor looks 'wavey' and starts to 'jitter' a lot when there is a lot of sound happening. When the sound completely dies, the monitor looks crisp and stable.

I also had the PS board recently rebuilt. Please help!

http://www.youtube.com/watch?v=HyDkkN_emoE
 
First reflow the filter board if it has not been done yet. Second I would replace the 74LS377 on the main board at location A10. If the 377 doesnt fix the problem you have issues on the sound board. When the sound and knocker go completely out thats a seperate issue most likely caused by the filter board having a cracked solder joint on the 30v line.
 
First reflow the filter board if it has not been done yet. Second I would replace the 74LS377 on the main board at location A10. If the 377 doesnt fix the problem you have issues on the sound board. When the sound and knocker go completely out thats a seperate issue most likely caused by the filter board having a cracked solder joint on the 30v line.

Ya, what he said! Very good advice......
 
First reflow the filter board if it has not been done yet. Second I would replace the 74LS377 on the main board at location A10. If the 377 doesnt fix the problem you have issues on the sound board. When the sound and knocker go completely out thats a seperate issue most likely caused by the filter board having a cracked solder joint on the 30v line.

Thanks! You're the man!
 
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