500+ no sound

[paul1981]

Used the same speakers on both units.  

Works on one, but not the other.

No other issues.  Everything else is good.

If found to not be the psu, then I suppose it must be either a power failure to the op-amps, or faulty op-amps which amplify the signal from Paula. But seems unlikely they'd both die together, so like the other chap said, check the 12v line.

[paul1981]

Well, after a good nights sleep and an chance to ponder it a bit, my eyes were opened!

I had forgotten when I picked this up, the previous owner told me there had been some battery damage before he removed the old leaky battery.

So, looking at that area which is where the audio filter circuitry sits, I noticed remains of battery damage that has been cleaned up, but not repaired!

Hmmm.

Yeah, I kinda feel stoopid!

I'm including a picture...

Erm... Yeah!! Always perform a visual inspection before anything else.