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Questions about tubes and gear that glows. FAQ

RE: Thank you! And cap questions?

Well built amp!

If you can't get close to the pot, see if you can follow the colored wires to a spot more accessible. Agree on not removing the pot. You'll want one DVM probe to go to the center pin wire. The other probe to either of the outside pins. This is the quick test method when you turn and measure a full swing at each end. The "turned up" position should have "less" resistance.

I should have mentioned to get the "in circuit" capacitor checker. Most dedicated cap checkers are. Then you don't need to unsolder anything. That one Jensen cap in particular.

My run away red plate bias was the result of a bad PCB tube socket pin solder joint. Very rare with point to point wiring.

Still wouldn't hurt to check the integrity of each connection. Finding something loose would actually be great as it is easily fixed and you're up and running.

Cheers!

Jonesy

P.S. Glad to hear your wife is helping you. My wife is also following this adventure.




"I know just enough to get into trouble. But not enough to get out of it."




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