wrote in message
oups.com...

Keith G wrote:

Dave, Peter's come up with a pretty through investigation procedure and
I'm
sure he'd get to the bottom of it, but if I were you I'd just run it in
to a
repair tech unless you're confident about fettling it. Contact your
seller
first? Also, is there a warranty running on it?

Thanks for the vote of confidence. Like most basic diagnostics, it
takes longer to write it out than to actually do it. I get VERY
squirrelly about visiting suggestions on other's equipment remotely
until I have a very good understanding of both the nature of the beast
and its proper behavior. So it drives me nuts when I am presented with:
"I have this amp, it doesn't work.... Any ideas?



That will be the 'completist' in you, but no bad thing!

I believe Dave's amp is quite new and almost certainly still in warranty (?)
which is why I suggested he might follow the 'take it back to shop' route.
(Stuffed, it was an eBay Chinese amp, of course!! ;-)

As we are crossposted, let's bring the RATs up to speed on my 2 Chinese 300B
SETs:

Amp No. 2 - little used, perfect behaviour and now gone - snatched away by
an EL34 PP user after he heard it!! (??)

Amp No. 1 - thrashed mercilessly, volume pot went on the fritz (replacement
was promised but never arrived), WW2 Chinese military driver valve fizzing
and had to be replaced, fragile/spindly lead on a (Boer War) German
capacitor broke and has had to be resoldered. Otherwise, still goes like a
train - OK, possibly a bit more Western Pacific than Western Electric, but I
love it and use it all the time!!

:-)