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I have a Harmon Kardon AV-230 model that i purchased 7 yrs ago. The other day i was watching tv and all of a sudden the receiver shut off but the stdby button was lit amber color. I tried to turn it on and it wont turn on. So i had to do the system restart and it worked for afew days until 5 mins ago and now it wont turn back on. I have never had this issue before. I am wondering since i live in hawaii and the sun sets towards our windows if there is a thermal cut off switch that maybe causing it to shut down. Any clues?

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You may be on the right track. Does the unit feel unusually warm when it dies? Keep it out of direct sunlight (this is ALL in the manual), away from humidity and moisture, avoiding drafts, dust and vibration and make sure it is well ventilated.

Also make sure you're not slaving anything that draws a lot of power from its convenience outlets on the back.

Posted on Jul 21, 2010

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1 Answer

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1 Answer

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For example, the sound level on my Harmon Kardon goes from -10 (lowest) to 10 (loudest), with 0 being the middle ground. The buzzing was happening when the Harmon Kardon was set to 10, and I was using the cable box volume to adjust the sound. To fix it, I turned down the volume on my receiver to 0, which may be about 50% max volume of the receiver. Then, I switched devices and used the volume on my cable box. This got rid of the static I was getting. Hope that helps.

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