Question about Onkyo TX-SR502 Receiver

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Amp Protection Mode

I would like to know what the hell on earth does these service station guys do that get the Onkyo 6.1 TX-SR 502 receiver out of the protection mode. I am curious as my service station folks have given me a laundary list of electronics components like a power amp, an op-amp, heat-sinks, endless numbers of resistors, capacitors and diodes.............. Pl looking for genuine advice ........folks Can something be done at our end to unlock this box????..

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  • Anonymous Nov 25, 2007

    turn power on and stays on for 5 seconds and shut off.please help

  • lauren ann Dec 17, 2007

    mine comes on for a split second and shuts off. the standbye light blinks. i checked the interior all looks good. any ideas.

  • Anonymous Feb 21, 2008

    same here. my onkyo has been working beautifully for about 10 months and then'll shut off for no apparent reason and then it may or may not come back on when i hit power...this sux

  • LANCE P Mar 27, 2008

    Same here. After 2.5 years of excellent use, I just had the Geek Squad out only to connect a new blue ray and new plasma screen TV. All the audio was previously done. There is no other component plugged into the powered/switched AC outlet in the back. Now, seemingly randomly, the amp will shut off, switch to STANDBY but the standby light will blink. I can use the remote to turn it back on, but it will only stay on about 1 - 3 min., then repeat same. It doesnt feel hot, and I've always run it with the cabinet doors open and vented. I'm not sure yet if it only happens using all 6 channels or volume sensitive, or both, or neither. I havent called the Geeks back yet.

  • Anonymous Jun 23, 2008

    onkyo flashes protection mode, no way to fix the problem, I don't have any speakers hooked up and have tried, Still flashes an shuts down.



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From LANCE P: I fixed it. Be sure that all your speaker connections are perfect. No element frays that can arc, no +/- problems, no single barely connected wire. My problem was volume sensitve and I evidently had one + wire that was loose in the back. I corrected it and ran it all day with surround and good volume with no problems. So diligently check ALL YOUR SPEAKER CONNECTIONS, both in the back of the unit and at your speakers

Posted on Mar 31, 2008


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