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Questions about tubes and gear that glows. FAQ

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Re: Cool Deal

Posted by Jim McShane on December 11, 2000 at 04:54:09:
I had the same thing happen to me on a Mullard CV729, with slightly different symptoms. The tube would work intermittently, and when it did work one of the heater pins would get blazing hot! I guessed it was a high resistance connection, touched it up with the soldering gun, and the tube is now excellent.
I've "cured" a number of noisy used 45s that way also. Even gone so far as to remove the base completely, use some DeOxit to clean the tube leads, and resolder it to a new base. It's a lot of work, but for a valuable or rare tube it's worth it.
Jim's Citation Amp & Vacuum Tube Pages