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In Reply to: RE: Heater lines posted by PeterI on January 13, 2016 at 13:38:32
Peter, You did try shielded line from input jacks to the input stage? Grounded at jack side, only?
Thanks!
Follow Ups:
I did but it's a moot point since EVERYTHING is grounded to the chassis, including the input jacks. There's no signal ground. Adding a 3" shielded cable from jacks to the input resistors and then 4" to 1st tube grid had no effect on the unwanted buzz. I expected some result or fix. Guitar amps are odd beasts; crude compared to what I usually work on.
Edits: 01/14/16
okay. are you trying the amp with a guitar with humbuckers? Single coils will pick up some noise. if it buzzes with the guitar unplugged check the input jacks to see if they are wired correctly/shorting.
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