Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: fdesalvo on May 25, 2012, 11:25:17 am

Title: Discolored pins on octal sockets - heat damage?
Post by: fdesalvo on May 25, 2012, 11:25:17 am

I was trying to salvage some ceramic octal sockets for a current build and I noticed that the pin 3 entry hole on each looked discolored from excessive heat.  Has anyone ever noticed this before and what could it be a syptom of?  :dontknow:

Thanks!

Title: Re: Discolored pins on octal sockets - heat damage?
Post by: fdesalvo on May 25, 2012, 06:03:14 pm

Quote from: drgonzonm on May 25, 2012, 05:58:41 pm

not enough info,

green?  black? red?   other colors? 

Do you know what kind of tubes these sockets held?  (Gives us an idea). 

White ceramic sockets held 6l6gcs. Pin entry points were yellow/brown.

Title: Re: Discolored pins on octal sockets - heat damage?
Post by: fdesalvo on May 25, 2012, 06:57:09 pm

Quote from: drgonzonm on May 25, 2012, 06:38:19 pm

I have seen o/t wires burnt on pin 3 of the power valves found onmy custom fender.  I have even seen the 470 ohm resistor fried. 

I believe we are frying the wires and resistors because we forgot to provide a load on the speaker jack. 

Does this help?   

Yes- you confirmed my suspicions. Thanks!