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tube no longer works after cleaning pins???

Posted by boodles (A) on October 25, 2023 at 06:05:35

I have a quick question, and I apologize in advance if this is stupid, but I won't know if I don't ask...
I have a new Dennis Had Inspire preamp that uses a pair of 01A tubes. As this tube type hasn't been made in many, many years, the tubes I've been able to locate have very heavily tarnished/dirty pins. In an effort to clean the brass pins on one of my tubes to ensure good contact with the tube socket, I applied a little bit of Brasso with a Q-tip to each pin and rubbed gently to distribute the polish. I then used a felt polishing tip on my Dremel tool and gently polished each pin to a beautiful shine. Upon re-inserting the tubes into my preamp, one works fine, but the other does not "fire" on power-up. Is there any way polishing the pins in the manner I employed could "kill" a tube? Is there a better and safer way to get the tube pins nice and clean to ensure good contact? I read somewhere that a Magic Eraser works well, but that requires water, and I don't know if that something you want around the base of a tube. Any thoughts/advice would be greatly appreciated.
Thanks so much,
Chris

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