1. Guest,
    If you need help getting to know Xenforo, please see our guide here. If you have feedback or questions, please post those here.
    Dismiss Notice

Receiver humming and grinding sound...

Discussion in 'AV Receivers' started by JayKellen, Feb 16, 2006.

  1. JayKellen

    JayKellen Well-Known Member

    May 22, 2003
    Likes Received:
    I have an RCA 650 watt Surround Sound system, and for the past few months, every time I turn on my receiver, it makes a grinding noise. It usually stops after a few minutes, but it has me worried. I have had it for about two and a half years. I know this is not near top of the line, but it works great and the sound effects and such are crystal clear, but I do not know if this is the start of a major problem. Any advice? Thanks for any information you can give me.
  2. Nhoj

    Nhoj Member

    Jan 17, 2006
    Likes Received:
    If it reliably goes away after a few minutes, I wouldn't worry about it.
    Durings those first minutes, see if the sound can be mechanically affected by rapping on the side cover or pushing on the plugs. You may have a microphonic connection somewhere inside. This is usually because of bad soldering or a poor choice of conducting material, and likely to happen at a cold start. Hitting it can cause a burst of arcing within the bad connection and kick start the recovery.
    This problem can last as long as your receiver without getting any worse. No need for panic.


Share This Page