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Harma 6L6GCSTR valve problem

So called Superior Grade Cryo Work ok and test ok but in use and the tester there is low insertion/extraction force in the sockets. Dragon's teeth hold them in place ok, so will not fall out. Measuring the pin diameters about 2.15 mm compared to a random selection of others laying around of 2.3mm. Known problem ? or leave alone or squash the pins a bit , perpendicular to the base forks gap ? and colateral damage ? These are from Peavey Deuce with final IC before the valves is corrupt so possibility of intermittant valve action feeding spikes back into the preamp ? no abnormal use admitted to , to have occassioned the IC failure

Reply to
N_Cook
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"Nutcase Kook"

** WTF are you an about ???

The Peavey Deuce VT has a pair of transistors driving the output valves - from a 300 volt DC supply.

Wot a bloody lunatic.

.... Phil

Reply to
Phil Allison

I don't see any IC's there? I do see a pair of transistors that may be suffering.

Report back when you can determine the type of damage the transistors are getting, which one, and how was it damaged? collector short, base to emitter short? no gain? etc,,,,

Jamie

Reply to
Jamie

place

compared

or

gap ?

so

failure

The 300V transistor pair are ok , as is the clean channel prea.

Reply to
N_Cook

--

place

compared

or

?

Marking a line outside of the socket base perpendicular to a fork, transfering a line to the valve base to get the correct "reversed" orientation . Then a 1.9mm rod as a stop in the jaws of parallel action pliers deformed the pins to elliptical axes of 2 and 2.3mm in the right sense to increase the grip.

Reply to
N_Cook

Never had problems with Peavey sockets even on a VX VTR series that blew one of the drivers. Replace with a pair of MJE13003 and the rest is history.

--
Live Fast Die Young, Leave A Pretty Corpse
Reply to
Meat Plow

Not a socket problem but out of mechanical spec valve problem

Reply to
N_Cook

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