Arfa Daily wrote in message
...

"Homer J Simpson" wrote in message
news:dB3Dh.123382$Oa.118873@edtnps82...

"N Cook" wrote in message
...

I cannot find anything wrong with it now.

It does/doesn't work?

Anyone familiar with these amps.?
I'm surprised the Cockroft Walton pump cirrcuit is enough to power the
HT
of
the ECC83.

Not a pump, a full wave bridge.

--
As Homey says, look again. Although it's peculiarly drawn, it is just a
simple full wave bridge, with 250v AC input. The caps are just spike
bypassers to protect the diodes. As to why it cut out, it may be that
something locked out that complex soft-start circuit. Give Trace Idiot a
call and just ask. I've found them pretty helpful in the past ...

Arfa



If it was used as i received it then the ground lift was in operation so if
the guitar was connected to this amp then not earthed via the preamp so it
was probably a static discharge. I'll replace the CMOS 4011 and 4066 as
presumably they are the most likely to be affected. I still don't see why as
the speaker output is earthed whether ground lifted or not.