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Thread: Temporary Hum (through speakers) from receiver |
    
New member Username: Gregpelletier
Post Number: 1
Registered: Jun-08
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| Posted on Tuesday, June 10, 2008 - 12:51 pm: |
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I get a hum in my speakers on my Harman Kardon AVR110 when I first turn it on. It is a very annoying hum. It goes away after about 30-40 mins. If I turn it off and back on, the hum returns.
Does anybody have any ideas to resolve this issue? |
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Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 12723
Registered: May-04
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| Posted on Tuesday, June 10, 2008 - 04:06 pm: |
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Is the unit in warranty? |
New member Username: Gregpelletier
Post Number: 2
Registered: Jun-08
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| Posted on Tuesday, June 10, 2008 - 04:24 pm: |
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No unfortunately it is not. |
Platinum Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 12724
Registered: May-04
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| Posted on Tuesday, June 10, 2008 - 07:31 pm: |
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Hum noises which slowly disappear as the unit warms are typically the result of defective power supply or possibly coupling capacitors. Hum in both channels suggests a power supply problem. Hum in only one channel would normally result from a coupling cap in that channel's circuitry. Take the unit to a repair shop and ask for an estimate of cost before you decide what to do.
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