I figure this is probably a lost cause, but thought I'd ask.
I have a tube that has started making a squeaky/whistling sound. It is only audible when no music is playing and during quiet passages. It has a constant volume: doesn't increase or decrease when I turn the volume pot. And it doesn't seem to otherwise affect the sound quality coming from tube. But it is sure is annoying when I do hear it.
I would just replace it -- but it is a vintage 45 tube and 1/2 of my favorite pair (by a long shot) of the 3 pairs of vintage 45s I've picked up.
Any miracle potential fix? Reheat the pins and add some solder? Add sealant to where the collar/base meets the glass? I'm willing to try anything.
many thanks in advance,
Derek
