Question about Harman Multimedia AVR 745 Receiver

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No sound at all coming out of the AVR745

It worked fine for 3 months after that no sound at all. The screen and all are fine but no sounds. I try everything if anyone have the same problem please share.

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  • lukke Apr 03, 2008

    Thanks, I think that is what it was too. Did you have the same problem? Just curious.

  • lukke Apr 04, 2008

    I am trying to have the manifacture replace or repair it. I am waiting for a response from them. But just in case, if neither one is working out. Can I still get it fix by a technician like you?

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If all functions in display lights up, there is most likely a failure in the power supply for 3,3V and 5V. You find this module on the right side of the heat sink seen from front of the amp. It's half way hidden behind the flat cable going to the front/display. There are two fuses T701 & T702, they are both 3,15AT. One of them is most likely blown, if so check the diode bridge D701. You'll probably measure a short between the legs of D701.

Posted on Aug 09, 2015

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The audio amplifiers circuits are damaged send it to a repair shop.

Posted on Apr 03, 2008

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