Has anyone experiencing buzzing sound from H/K avr510?

Discussion in 'AV Receivers' started by Lam Nguyen, Jan 26, 2004.

  1. Lam Nguyen

    Lam Nguyen Stunt Coordinator

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    My Harman Kardon avr510 makes this buzzing sound sometimes when it is first turned on, after a few minutes, the receiver gets warmer and the buzzing goes away. This doesn't happen all the time, just more likely if I haven't use it in a while. This is something I have noticed for over a year now but it never really bother me too much, just wondering any knows what is going on. Thanks in advanced.
     
  2. JohnSer

    JohnSer Stunt Coordinator

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    Lam,

    Is the buzzing coming from receiver or from the speakers? A buzzing sound from the receiver might be a slightly loose part of the chassis or heatsink, or sometimes a component. If it is hum from the speakers (all channels), there is service bulletin on that model. A cap in the regulated power supply is recommended to be changed. See your closest HK service center.

    JohnS
     
  3. Lam Nguyen

    Lam Nguyen Stunt Coordinator

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    Thanks JohnSer,
    The buzzing is definately coming from the receiver, while the buzzing is going on, the sound coming out of the speakers sounds fine. What can I do?
     
  4. JohnSer

    JohnSer Stunt Coordinator

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    Lam, use your hand to dampen the outside parts of the chassis. If it makes a difference in the noise, try tightening down the chassis screws. Sometimes transformers will make a slight buzzing noise. But, if it is something inside, its time to take it to a tech, or just live with it.

    JohnS
     
  5. Lam Nguyen

    Lam Nguyen Stunt Coordinator

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    Thanks JohnSer,

    Definately not the chassis, it goes away when the amp get warm. I should contact HK.
    Good Day! [​IMG]
     

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