Try unplugging components until you isolate the component causing the hum. Also note, that I have had RCAs on my turntable that were not insulated enough and these caused hum, which when replaced, went away.
Question about hum from speakers
I know there's at least one amp engineer here... I'd like some help. I bought a used solid-state amp from ebay; the ad read "
McCORMACK POWER DRIVE DNA-.5 Deluxe REV B POWER AMPLIFIER - EXCELLENT CONDITION!"
Well, I swapped it in, replacing a Dynaco Stereo 120, and there's a hum from both speakers. I have to believe that the seller was well aware of the hum. What I'm wondering is, is the hum a result of some electronic component(s) in the amp failing (or having failed), such that it's salvageable by replacing the bad component(s)? Or would that be hoping too much?
Well, I swapped it in, replacing a Dynaco Stereo 120, and there's a hum from both speakers. I have to believe that the seller was well aware of the hum. What I'm wondering is, is the hum a result of some electronic component(s) in the amp failing (or having failed), such that it's salvageable by replacing the bad component(s)? Or would that be hoping too much?
Showing 2 responses by jetter
My ground loop was caused because I have my stereo also hooked up to the tv cable box for watching some tv shows. Buying the following isolator completely eliminated the hum. Jensen VRD-1FF IsoMax Digital RF Isolator https://www.parts-express.com/jensen-iso-max-vrd-1ff-75-ohm-inline-digital-catv-isolator-hum-elimina... |