WPC-S - Crazy loud constant buzzing at power on

[Sgt GrizZ]

Just powered up this Flintstones.

Immediately loud constant buzzing from speakers ...and I mean LOUD, like full volume earthshaking ! Game boots and plays fine.

Not had many sound issues before, quick look on Pinwiki etc seems to suggest the big caps have prob failed. I have had the board out and buzzed out the traces, reflowed joints for them so all connections are good. No change.

Anyone experienced this before ?, and are the caps the most likely culprit ?

Chiz

 

[xenon325i]

Almost certainly the caps which filter out the 50Hz mains hum which is what you are hearing.

 

[Sgt GrizZ]

Cheers. Caps changed. All good