In Reply to: RE: Odd hum issue - suggestions ?? posted by rogerh113 on May 30, 2017 at 16:28:22:
I don't know what those upgrades are. Is this a new problem in this preamp, or did you buy it like this?
"Sure enough, the ground lead was secured at one of the inside foot screws."
Do you mean the green wire from the line cord? If that's connected to the chassis, touching the chassis should have no effect. This might be a problem with your house wiring.
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Follow Ups
- RE: Odd hum issue - suggestions ?? - Triode_Kingdom 06:41:04 05/31/17 (0)