Question about Denon AVR-600 Receiver

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AVR-600 We have a Denon AVR-600 and -protect- is showing on the unit. We follwed the instructions in user manual and checked all speaker connections for shorts, cleaned vents and unplugged it for 24 hours. Nothing has resolved the problem it still says -protect-.

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  • Chuck May 11, 2010

    i meant to say that if it doesnt say protect after you unplugged everything that you should only plug one thing in at a time and find out the culprit.

  • Chuck May 11, 2010

    unplug everything! yes everything. Just plug in the power cord and see if it still says protect. if it doesnt then plug on thing in at a time and see what is causing the protect. Could be a damaged speaker crossed rca connectioins. let me know. i will get back to you



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

Posted on Feb 26, 2009


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Not familiar with this model but seems like the protection circuit is kicking in, this could be caused by an imbalance of Ohms between channels or a short. remove & check all speakers and cables for continuity or shorts, does the unit power on without speakers or in a different mode (surround off).
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Is it possible for you to lower the source level? if yes go ahead...

There is an automatic Dialogue normalisation function in Denon which is activated to reduce overly bright input signals. ( most movies have wide variation in sound levels and therefore this function is avaialble). (see page45 of your user manual).

When your system worked fine with the AVR 2808CI, then why is it giving problem with AVR 3808CI....???? You must ask Denon.

Protection circuits are activated when:
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2).Core wires of the speakers are touching each other or a core wire is sticking out of the terminal and touching the set's rear panel or the speaker itself has a problem.
3). Speakers with an impedance other than specified are being used.
4). the set is damamged or has bad solder / dry solder connection .

If your AVR is new, please do not accept, the set could be faulty. The protection circuits should not be activated unless any of the above happen.

You must know, at times the protection circuits are not fast enough and it could burn some of the transistors on the power output circuit. With time, the solders on the circuit board could give way and give you problems later on.

You must sort out with Denon if the AVR is under warranty.

Best of Luck.

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