Punch Out! speaker buzz

kks

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Hi all,

First post. I am a complete novice on all things arcade repair related, but I am hoping to diagnose and fix a problem with my PO. I am getting a strong buzz out of both speakers. Since PO has separate amps for each speaker on each monitor, it does not seem that buzz is generating from the amp. Suggestions? Could it just be a grounding issue? In any answer, please assume I am completely clueless. Thanks in advance.
 
It's completely possible that BOTH amps need to be rebuilt. Very common for the Sanyo amps to have a strong buzz when the caps need to be changed. Order two cap kits for the two amps, and your buzz will probably go away.
 
You need to replace the capacitors on both monitors to make the buzz go away. Figure out what type of monitors you've got and then order the appropriate "cap kits" online...

EDIT: looks like LyonsArcade beat me to it...
 
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