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Power shuts off immediately after power on, amplifier circuitry has been activated for a Onkyo HTR500. how do fix the problem? do I change the fuse.

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If you disconnect the speaker wires from it and it still happens, you should get it into a technician to look at it.

Posted on Dec 28, 2010

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I have an Onkyo TX-SR500. I turn it on, and immediately it shuts off. Under troubleshooting it says, "activated amplifier protection circuitry". Here is my issue: I've called Onkyo USA...


No one would be able to troubleshoot it over the phone or internet. Take it to a reputable shop and get an estimate, then decide if it's worth the cost.

May 17, 2011 | Onkyo TX-SR500 Receiver

1 Answer

This site said it was free - then there is a charge? I am getting a "Protecting" message when I turn on my receiver - then it shuts off....What does this mean and what should I do?


It means the receiver senses excessive heat, or a short at its outputs. Disconnect the speaker wires and see if that helps. If not, get it to a Tech. If it turns on, figure out which speaker path(s) was causing the problem and resolve it.

The manual.

http://www.retrevo.com/support/Onkyo-TX-SR601-Receivers-manual/id/365ag212/t/2/

Power shuts off immediately after power on.

• Amplifier protection circuitry is activated. Remove the power cord from the outlet immediately. Contact your Onkyo service center.

Jan 13, 2011 | Onkyo TX-SR601 Receiver

1 Answer

Power will not stay on


Activated protection circuitry means that the amplifier is seeing conditions it does not like and is shutting down the power to prevent further damage.
Either you have a short in your speaker wires, in your speakers, or a blown amplifier.
Disconnect both speakers and turn on the amplifier. Does it still give the error message? If it does, your amp is blown. If it does not, carefully inspect your speaker wires and their connection. Make sure all looks good and reconnect the speakers and try it again. Still get the error message? You likely have a problem in your speaker cabinet(s).

Apr 21, 2009 | Onkyo HTR500 Receiver

1 Answer

Onkyo HT-R500 amplifier protection circuitry activated


u have a short.

remove all speakers cables and turn it on, if remains on and u can up the volume do the next.
1: turn it off.
2: connect only 1 speaker cable (each time to see if the short is in one speaker or cable)
3: turn it on, up the volume.
this way u must be able to see what cable or speaker have the problem.

if still the same prob the short is inside.
i put a answer of a prob where cant up of 41 check the cleaning method.

Good luck

Oct 27, 2008 | Onkyo HTR500 Receiver

2 Answers

Power will not stay on


www.eserviceinfo.com/downloadsm/28790/Onkyo_HT-R500.html

Jun 03, 2008 | Onkyo HTR500 Receiver

3 Answers

My Onkyo Receiver TX 601 is turning itself off


Several things can cause this: Loud signal passages can momentarily draw high currents at the mains, especially if you have unit plugged into power stripe with other equipment. Or if unit is plugged into isolation transformer, current draw may exceed output of transformer. Too many speakers hooked to output or if one is bad (partially shorted due to overheating)

Apr 04, 2008 | Onkyo HTR500 Receiver

1 Answer

Onkyo HT-R500


Unit has circuitry problems, take in for service

Mar 14, 2008 | Onkyo HTR500 Receiver

3 Answers

Reciever shutting off


Has anyone found a solution for this problem? My unit starting clicking off to standby once in a while and now does it all the time.

Feb 02, 2008 | Onkyo HTR500 Receiver

1 Answer

Amplifier protection circuitry


more than likely blown amp transistors on 1 or more channels. use an ohm meter to check resistance of the transistors.

Nov 14, 2007 | Onkyo HTR500 Receiver

1 Answer

Power shuts off immediatly after power on


you may have to many electronics plugged up to one circuit in your house. try plugging the sound system into a different socket and that might help.

Oct 31, 2007 | Onkyo SKS-HT500 System

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