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HT receiver is making a humming noise periodically

Tags:
  • Phones
  • Cable
  • Home Theatre
August 26, 2014 7:29:51 PM

Hello everyone, I recently bought a sony str-k750p receiver. I attached all the cables to it and everything was working fine. A few days later I tried to play music from my phone through it. I attached the cable to my phone (rca to 3.5mm) and then a strange sound was coming from the speakers. Ever since my receiver has been making humming noises every few minutes and I can't figure out what's causing it or how to stop it.

PS- I bought my subwoofer a few months ago and it made the same kind of hum as the receiver does now, but the subwoofer stopped humming a weeks ago. Might the receiver also stop, if anything, I think it's becoming more frequent.

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