Question about Onkyo TX-SR500 Receiver

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Our receiver is showing "PROTECT",

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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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Protect message

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This means that you have a problem with the speaker outputs.
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