Panasonic Sa-pt770 Receiver Logo

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Keith Swaback Posted on Apr 05, 2014
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The receiver will not turn on and there is an audible relay clicking on and off.

The fuse from the power supply is fine, and there is 120VRMS reaching the main power supply board. The relay (Tyco SDT-S-106LMR) will click on and then off immediately whenever I hit the power button. Any suggestions on next steps?

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Arif A

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I finally figured this out after searching everywhere online and seeing people in similar situations but no solutions. I was getting 2 audible relay clicks but no power to the surround sound unit. After some experimenting this is what worked for me:

Remove all wires to the unit including the ac power cord, plug in all the cables you need THEN the power cable after. In my case I had a Panasonic sa-pt770, I plugged in the speakers to the respective colors, then my HDMI, then the power cable.

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  • Posted on Apr 24, 2014
Rudy Rutenber
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You have a problem with the power supply or audio amp section. Most likely shorted audio output transistors.

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