Wacky Galaga Sounds

bigjeeps1

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Joined
Nov 29, 2009
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Springfield, Missouri
I have a galaga I just picked up today. It has a weird sound issue. It has a weird high pitch tone to it, almost like a record spinning too fast. I have a audio file but dont know how to post it. Any suggestions?
 
Check the +5. It should be about +5.20 Sometimes Galagas do a little whining if it is too high or too low.

Also, push all your socketed chips down, and make sure the edge connector is seated properly. Might need to replace the caps in the sound section...
 
If it's a digital sound artifact you'll need to clean a couple of the custom chips... If it's an analog sound issue then recap the audio amp section of the board.
 
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