On Wed, 08 Sep 2010 16:24:57 +0100, N_Cook wrote:

Serious amount of damage on one ch from someone using handfulls of
white goo under the TO3 ," insulating" the pins as they were inserted
through it into the TO3 sockets, causing sparking and destruction of
that socket and a load of colateral.

Plenty of info out there
http://stomach.v2.nl/docs/Hardware/S...ver%20PM-1.5a-
PM1200%20
Service%20Schematics-1.pdf
eservice etc

But nowhere can I find the ,no load, quiescent draw from the mains. I
have bypassed / isolated the mains triac board and powering via metered
variac to the transformer direct at these preliminary stages of powerup.
Running at 50 percent mains about 0.1 amp current draw and all monitored
DC levels match between channels and clean signal on output and ps rails
half expected values. Increase to 60 percent and draw climbs abruptly to
0.5 amp . So far quickly returned to 50 percent and nothing obviously
overheating. Anyone happen to know the expected draw?

Adaptive or commutating power supply. Adds more rail the harder it's
driven.

Rails don't like continuous sine waves. May provide some explanation to
what you are seeing. Also subject to back EMF. Wasn't my favorite amp,
lots of engineering revisions/bulletins.



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