Question about Onkyo TX-SR500 Receiver

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Our receiver is showing "PROTECT",

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  • 3,287 Answers

Shut it off, and check the speaker connections. Look for a thin strand of wire shorting the terminals both at the rear of the receiver AND each of the speakers. Next, look for damaged speaker wires. Those run under rugs can be damaged without knowing as they're covered. Look along the entire length of the speaker wires for missing insulation and shorted conductors. Replace any wire that has damaged insulation and try again. Correct any blown speaker fuses or tripped resets (if equipped).

If the receiver still shows "protect" it will probably need to be serviced due to a failed power transistor. A damaged wire that allows a short can cause this - and typically the amplifier will go into protect mode under this condition. If allowed to persist for very long or at loud volumes, permanent damage can result. Sometimes it works one moment and then seemingly fails with this message "out of the blue". Hopefully, you'll find the problem with a wire and it will work as expected again.

Good luck!

Posted on Nov 10, 2010

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1 Answer

Protect message


Protect means that a fault was detected, disconnect all the speakers

and connect one at a time to find the cause.

If symptoms persist , it needs repair, output stage or power supply

circuits should be the preliminary things to check.

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It means the audio output stage in the receiver is getting to hot and goes into auto shutdown to protect the circuits, check all speaker wires for shorts, if by chance you added extra speakers recently remove them. If there is no change you will need a professional to assess the receiver.

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The protection indication is triggered by an Amplifier output failure. This is done to protect your speaker system. You will need professional help to fix it because it involves stripping the receiver , removing the faulty component, getting replacement and re soldering that component back.

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FIRST PRESS THE RESET BUTTON BEHIND THE FACE IF DONT WORK CHECK ALL SPEAKER WIRES SOMETHING MIGHT BE TOUCHING

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Receiver is flashing "PROTECT" on


look for a button or switch lablelled "lock, "protect" or with an image of padlock on it, press the button/switch the switch, this should "un-protect" the device

May 04, 2011 | Audio Players & Recorders

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This means that you have a problem with the speaker outputs.
-Try turning the unit off and unplugging it.
-Disconnect all of your speakers.
-Plug it back in and turn it on.
If it works, check you speakers and wiring for shorts.

If it still shows protect then you probably have a blow output amplifier and it will need repair.

Mar 15, 2011 | Onkyo TX-SV454 Receiver

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This indicates a load on the system, turn receiver off, remove speaker wires from the back of the unit. Now power up and turn volume right down, if the word protect stays off, there is a short in the wires or one of the speakers. But if the word protect comes on, "with wires and speakers dis-connected, it means there is a short in one or more of the audio outputs in the receiver. If you are handy using a digital meter then you may be able to track the shorts down, and replace the parts to get it up and running, also if you can solder then it will make the job easier.

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1 Answer

The word "Protected" keeps coming up on the


When the word protect comes on it means there is a load problem, first! turn off the receiver, next remove all wires and speakers. Now turn the unit back on and make sure the volume is turned right down, this will reset the processor controller ic, if the word protect stays off it means there is a short in wires or one of the speakers. on the other hand if the word protect comes on when the receiver is switched on "without wires and speakers" you have a short in one or more of the audio output ic's in the receiver that will need a tech to correct.

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1 Answer

Tere is the word "


This is an indicator you have audio output problems in the receiver, check the wiring on the back of the speakers to the amp to make sure there are no shorts, next turn the volume down and disconnect all the speakers, now turn the receiver on to see if the word protect turns off if it does turn off the receiver, it proves the receiver is fine. However! if the protect stays on, it means that the audio output ic's are shorted and a technician will be required to go the rest of the way.

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1 Answer

Its flashing the word "protect".. i need the


there is no code. protect means you have a short in the speakers or speaker wires, or a bad output ic.

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