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In Reply to: RE: VK-3i hum posted by Try1256 on February 16, 2017 at 10:06:29
Was fine with every other system I tried it in.
What did I do? Just popped on one of these. Dead silence! :)
Many people frown on them. Me? I use them when needed, so long as one or more components in the chain are properly grounded.
Follow Ups:
I have tried lifting the ground. No effect.
This is pretty much a standard procedure prior to sending anything off for repair.
I'm not sure which/if any of the tubes would affect both channels as I am not familiar with that pre-amp.
However I and other posters here have experienced hums which will disappear when tube pins are cleaned. Tube socket contacts should be cleaned and tightened as well.
Care must be taken if you are not familiar with this process. You can try a search here regarding maintenance of tubes and sockets. There's a great bit of info by Jim McShane in the FAQ section. You might also try posting your issue in the tube forum.
Good luck and let us know how things go.
Welcome to the Asylum!
Cheers!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Thanks Jonesy. I am certainly not an electonics expert but I dont think a bad tube on either side would cause hum in both. I have cleaned the pins and sockets and the 6v6 are new. The 6922's are ElectroHarmonix and the were in the unit when I purchased it. I was told they had about 100 hours on them. I have two other sets of 6922's and it doesnt really change when I swap them out.
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