I wouldn't expect physical trauma to be the issue, more something
like a metal flash due to an arc, or tin whiskers... Something
If the feedthroughs were capacitors, I would suspect a metal
migration similar to what is being seen on many older silver
I am pretty sure that everything inside of the can is isolated
from the can. You could try measuring the resistance between
the affected resistor's terminal, and the can, looking for a
high impedance bridging resistance.
David C. Partridge wrote:
>> I am thinking that the resistor leads have to leave the oil tank some way.
>> it possible that the insulator on whatever sort of feedthru has been
> They are glass (or very similar) feedthroughs, so if that were compromised, I
> think I'd see oil ... There is no visual sign whatsoever of trauma.
> If I find anything in that area, be sure I'll shout.
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