Question about Denon AVR-600 Receiver

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Denon AVR -600 Protect mode

My receiver was working fine for about 20 min. and then it went into protect mode.  How do I fix?

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  • Roasty Nov 03, 2007

    I have a very similar problem with my Denon AVR-600. Occasionally, the system seems to go into some form of 'protect' mode and the source's audio is there, but bearly audible.



6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 4234 Answers

SOURCE: Denon AVR-1508 Receiver problems - cuts off and goes into protect mode

Usually when the unit runs for a while before shutting down there are two possibilities:

1) There is a small amount of DC current present that effectively heats up the speaker coils enough to cause a temporary short circuit that kicks in the protect circuit.
2) The output transistors or bias transistors are sensitive to heat and breaking down again causing the protect circuit to kick in.

A few experiments to try:

1) Does the time to shutdown change depending upon the volume level?
2) Is there any background noise coming from the speakers? Listen to a blank tape for example. Is there a hum or any other noise that you would not normally expect?
3) If you have a DC voltmeter, check for any voltage between the speaker lines.

Update this and we'll try to narrow this down.


Posted on Aug 19, 2008

  • 119 Answers


The problem is past that point once the protect continues to activate the amp is in need of service

Posted on Feb 26, 2009

  • 133 Answers

SOURCE: ''Protect'' mode on Denon AVR 800

Protect mode appears when there is a problem with the amp it goes into this mode to avoid any further damage to the system. to begin with disconnect all the speakers and see if it continues or else it could be that moisture in the circuits have caused it to go in protect mode or else ther is some shorting in the circuitry. It wud be wise to have it serviced by an authorised personnel

Posted on Jul 23, 2009

  • 458 Answers

SOURCE: I have a denon AVR-2000 that has gone into protect

power output short....or spk or spk wire short check and .need service...

Posted on Jan 07, 2010

  • 4234 Answers

SOURCE: HK AVR-247 protect mode

This is an indication of an internal problem. Typically this is shorted output transistors. Expect a parts cost in the $25-$40 range for this repair.


Posted on Apr 06, 2010

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If you used it for only 3-4 hours before the problem occurred then you should have a replacement warranty on the product.
I think you have already done the factory reset procedure shown on page 175 of the user manual.
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Yes that is why. The receiver is protecting itself from an un-stable load impedance which causes current/voltage spikes through the final amplifier components and proportionally through the input where the protection relay is (click),. Do not continue using the amp until you have repaired or replaced the blown speakers. A rule of thumb is to maintain 8 ohms on each speaker wire plugged into the amp. Keep that in mind or eventually you will damage it.

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How diid i get a denin avr 2000 out off protect mode?

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Getting out of protect mode I have a Denon 787 receiver. It was working fine for 8 months. All of sudden, my reciever goes into protect mode after playing for about 30 min. Right after it goes into protect...

most of the receivers come with a cooling fan inside see if its working they usually work when you turn the volume up,, if its working that means you are playing it to loud if you lower the volume a little it will play just fine..( if the fan inside is not working thats the reason it goes into protect mode and it means you must have it repaired,, it goes into protect mode to prevent furter damage to the unit or the speakers,,

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The problem is past that point once the protect continues to activate the amp is in need of service

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replace all the electrolytic capacitors in the power supply. i had the exact same problem with mine and once i replaced the capacitors it powered up and stayed on and worked perfect.
these capacitors tend to fail as they're of poor quality.
this fault is very common on denon receivers, especially the later models.

hope this helps?

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sterio wireing touching each other putting it in protect mode retrace all your wireing and redo this should clear up the protect mode if not return denon as manufacture malfunction to get replacement

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Stuck on standby

Unit is in protect mode there are a few problems that can trigger protect mode the most common is blown channel (shorted outputs). Sometimes one of the 15v regulators may go bad causing imbalance of supplys triggering protect mode. Also sometimes a bad solder connection could cause unit to go into protect also. I work for Denon authorzied repair center in Michigan if your nearby and Shipping to Michigan is economical let me know

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