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Questions about tubes and gear that glows.

Don't overlook loose socket contacts in the Hickok...

...I have a 752A with loose contacts on the 9 pin socket and it causes intermittent readings similar to what you describe. Traditional contact retensioning is a temporary measure. The real solution is to replace the socket....but that won't be happening anytime soon because it's really a 10 pin socket...nearly unobtainium. Will probably perform a contact transplant procedure when I get the time and nerve.


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  • Don't overlook loose socket contacts in the Hickok... - Steve O 20:16:46 06/15/12 (0)

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