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In Reply to: RE: hum from new tube posted by scruffy_ on February 7, 2017 at 16:26:42:
There's only so much you can do in hopes that it is not defective.Try cleaning the tube pins. Also clean and tighten the socket claws in the voltage stage.
If that doesn't work maybe it does need some hours on it as suggested.
So leave it in the output stage for awhile and then try switching back.
The hum is coming through the speakers?
If not, and it's mechanical, can you supreme the hum by putting some light pressure on the tube?
Cheers!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Edits: 02/07/17
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Follow Ups
- RE: hum from new tube - Jonesy 17:00:30 02/07/17 (2)
- Yes, the noise is coming from the speakers nt - scruffy_ 00:59:23 02/08/17 (1)
- RE: Yes, the noise is coming from the speakers nt - Uncle Mike 03:14:43 02/08/17 (0)