Question about Harman Kardon AVR 340 Receiver

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All sound just dissapeared

We have had our HK AVR 340 for a bit over a year now. The other day while in the middle of a DVD the sound went completely dead. At first we thought it was the dvd player, but after trying the radio and ipod bridge through it we still could still receive no sound at all. Has this happened to anyone else and how was it fixed? We are worried it will cost more to fix the problem then it would be to buy a new one, but with it being only 1 yr old we are a bit annoyed. Thanks

Posted by michelle smith on

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  • Anonymous Jul 07, 2008

    Same EXACT problem but on the AVR335. Worked fine for 6 months then went completely dead. Front panel does not indicate that anything is wrong. I've reset it without success. I'm guessing it's the thermal sensor screwed in the heat sink at the top-center. Anyone have any info at all on that sensor?

  • bamcornbread Dec 11, 2008

    I tried to reset my AVR 340 and I still have no sound

  • coconutya Apr 14, 2009

    I also cant get any sound out of the thing even after reseting it, all the functions are normal its just not producing any sound out of the speakers. Any ideas



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You need to reset the receiver, hold the sure mode and tuner mode at the same time with the unit of(or in stand by).this will reset thwe receiver the only down fall is you will have to reset all of your settings.

Posted on Aug 07, 2007


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"You may have observed that the HK 3485 is not equipped with digital audio inputs or surround sound decoding. If you prefer the complete home theater experience, you may wish to consider purchasing a fullfeatured Harman Kardon AVR Series audio/video receiver. However, we hope you will find that using a DVD player with the HK 3485 in smaller settings, such as a bedroom or den, surpasses the audio performance of most televisions, including those with onboard stereo speakers."

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hi lowone.

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I admit it, I am very partial to HK products. I own 2 of their receivers (one of these for 2 years, the other for 6, and they both

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1 Answer

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You seem have a problem with a component in that channel, the bad news is that it is hard to fix that type of problem (you would be better off if the channel died). All of the components in the final output section are part of the same audio loop (per channel), which makes it hard to find the faulty part.

Sounds to me like a bypass or coupling capacitor is faulty or need to be re-soldered, either way to fix this problem you should take it in to a repair shop.

I hope that helps and sorry for the bad news.

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