Question about Onkyo TX-NR801 Receiver

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Amp protection circuit

Receiver turns off right after i turn it on

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Disconnect all speaker leads at the unit,power it up then see if it'll stay on. if it does, reinstall one speaker lead at a time until it goes into protect mode. that speaker line will probably have a short in it. Just run a peice of skr wire straight from the unit to the sspeaker in doubt, hooks em up see what happens. if it shuts down have that skr ckd.if it works, just rip out the old shorted line and run new stuff.

Posted on Dec 29, 2007

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Posted on Jan 02, 2017

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1 Answer

My RX- V673 Yamaha receiver won't turn on. I have power and the stand by switch is on


Try holding the 'tone control' and 'info' buttons and press power. This will unlock it if it is protect mode. If it turns back off right away, then you most likely have a problem in the amp circuit which needs to be repaired.

Jan 17, 2017 | Yamaha RX-V673

1 Answer

Hdmi light is blinking and receiver won't turn on


if it is a Pioneer receiver, then try holding the advanced surround and power buttons for about five seconds. This should unlock the protect circuit and allow the unit to turn on. If it shuts right off again, then you probably have an amp problem that needs to be repaired.

Oct 24, 2015 | Audio Players & Recorders

1 Answer

Why does it turn on, then off right away?


There will be a circuit protection system activating. You switch it and an overload condition develops so it turns off to prevent damage getting worse. The overload could be cause by faulty or touching speaker wires. Removing these might stop it. Another cause is faulty or shorted transistor or other device in the power amp section.

Jul 02, 2015 | Yamaha HTR-5660 Receiver

2 Answers

VSX 60. MCACC blue Light flashes and unit will not turn on


try pressing and holding 'advanced surround' and the power button. This should reset the protect circuit. If it turns off again right away, then there is a problem with the amp that needs to be repaired.

Mar 25, 2014 | Pioneer VSX-52TX Receiver

1 Answer

Where is amp curcuit protection in onkyo sr


There are plenty of protect circuits in your receiver. Each chanel has one as well as dc protect and thermal protect etc etc. More than likely you have a blown channel that needs to be rebuilt.

May 17, 2012 | Onkyo TX-SR604 Receiver

1 Answer

How do you reset the protection mode


The protection function has been activated because it has sensed an output load problem, turn receiver off and remove the speaker wires, this will reset the protection circuit. Now! turn the device on and turn the volume right down, if the protection mode stays off it indicates a short in the speaker wire or one of the speakers, but! if the protection circuit comes on with "the speakers and wires dis-connected" it means there is a short in the audio outputs in the receiver itself, this can only be rectified by having the parts replaced.

Mar 02, 2011 | Sony STR-DE585 Receiver

1 Answer

My receiver sat for five years, now it states "Protect"


Ok protect means there was a problem on the circuit, I am not there to see but please check for any bad capcitors,rails,amps ect ect if you do not know how to check this your going to need to check it into a repair shop for a eval.

Thanks I hope this helps please do rate the solution with the 4 thumbs above.

Feb 13, 2010 | Onkyo TX-SR700 Receiver

1 Answer

DENNON AVR-2016 - can't seem to turn it on - it turns off after a few seconds. Help! maunog@hotmail.com


Check the speaker wires at both ends for possible shorts. One tiny strand of copper is enough to do it, and set off the amp protection circuit.
If there are no problems with the speaker wires, also check your RCA plugs for a loose or shorted connection. (Turn down the receiver volume to about -30dB or lower before the amp clicks on when checking.)
Is the signal distorted before it cuts out? Another possibility is a feedback loop, in which you have a source (especially a TV) that is both receiving and supplying a signal to the receiver without going through a tape-loop circuit like VCR1, etc. For example, if you connect the output from the TV to "TV" and also have a DVD player running through the receiver *to* the TV, you'll get a feedback loop which will overload the receiver and may trigger the protection circuit.

Feb 09, 2010 | Denon Audio Players & Recorders

1 Answer

The amp protection circuit was actived - what should we do?


Remove all speaker wires from the receiver and turn it on.

If it still goes into protect, I'll bet the house that one of the channels is shorted out and it needs repair. This is a job for a pro.

If it doesn't go into protect, check for a short in the speaker wire or for a bad speaker.

Jan 28, 2009 | Onkyo TX-SR605 Receiver

1 Answer

Harman Kardon AVR 245 Receiver PROTECT Error Message/Shutting Down All Equipment


could be your receiver only, it has tripped due to discrepancy on the output stage of your amp. that cracking sound in one of your speakers could have caused the trouble. it is possibly shorted. but in your case it could have damaged already the amp that;s why it would not turn on. normally it will first trip, turn on then turns off. but to stay off and not to turn on again is major problem of the amp. or maybe it emanated from miscabling, probably the ceiling speakers got connected to a high output or main amp. but try removing all speakers first then turn the unit on. see if it does power up.

May 22, 2008 | Harman Multimedia AVR 245 7.1 Channels...

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