I know this has been covered in the past, but I can't remember, or find the
answer to my question.
I have a 3-500z that has the solder melted in the pins of the heater
element. It came from a poorly designed (LK500A) amplifier that doesn't have
adequate cooling in the socket area. The filaments don't light up. In the
past this has happened and I simply re-melted the solder in the filament
pins and this fixed the problem. This time it didn't work and the filaments
don't light up. Is there any special technique that a "home-owner/civilian"
can perform to get this tube back to health?
TIA and 73s
Bill, w6qd
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