Galaga speaker thumping

S4Patrick

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Hello...

Dedicated Galaga game. The speaker keeps thumping--about 30 times a minute.

Game works 100%. Sounds for the game all work.

Any ideas/ suggestions?

Thanks...

~Patrick
 
I recall something about bad electrolytic caps around the audio amp causing that thump.

Matt
 
Anyone know more about the electrolytic caps problem/ fix?

Thanks...

~Patrick
 
Do you accidentally have a space invaders board installed?

Im gonna throw my money on a 12v issue...Do you have a switcher, or the old midway?
 
I recall something about bad electrolytic caps around the audio amp causing that thump.

Matt

Those electrolytic caps by the audio amp are notorius for failing. Best to replace them one at a time and see if your thump goes away.

Bill
 
Space Invaders! Nope.

I do have a switcher power supply in place of the original one.


Can someone perhaps post up a picture or two of the area where the electrolytic caps that are by the audio amp?

Thanks!
 
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