Question about Denon DRA-685 Receiver

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I cant get any sound to come out of the receiver. I checked that the speaker wires are not touching. if it is in protection mode how do I get that turned off

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Good start checking your speaker wires. A better test would be to disconnect them entirely in case there's a short inside the speaker itself. Keep the volume WAY down when you power back up and see if it runs for a while. If it does, then you do have a short somewhere - probably inside speaker. If it trips off, you might want to think in terms of getting the problem fixed rather than defeating the protection circuit.

Posted on Nov 12, 2010

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--SS.

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It sounds like you have some wires that are touching cause the reciever to protect itself. Go over and check all wiring and make sure you have nothing touching. Unplug device while you are doing this and then when done plug back up and see if that fixed issue.

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When i switch on my samsung HT-Z110 the word hello appears then protect thenit turned off!


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The receiver turns on and immediately goes to standby


The unit is going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

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Fastest way to check the receiver is to disconnect all speaker wires at the receiver and turn the unit back on. If it does not go into protect, your receiver is ok and you need to check all wires and speakers. If just one piece of braid on a speaker wire touches the other, it may not shut off immediately, however, as you turn up the volume the current level rises in the wire and creates a short. Thus, shuts down the receiver. If you need further help troubleshooting, post a comment and I can walk you thru it. Hope this helps.

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Sony STR K840P, protect mode is flashing,no sound,nothing come out. When starting every thing is fine for 20 or 30 seconds and the "protect"start to flash and nothing geht anymore,everything is blocked


This is a classic problem. One of your speakers is miss wired and or your speaker wires positive and negitive leads are touching. Check all connections from the back of the reciever to the back of the speakers to make sure your positive and negatives are correct and that none of the wiring is crossed or touching one another.

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This generally means you've got a short somewhere, and the received is trying to protect itself.

My suggestion is to disconnect all of your speakers at both ends, and reconnect them.

Most times this happens because a speaker wire is lose, and the positive and negative connections are touching each other, causing it to short out.

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I just hooked up my old Onkyo TX-8511 receiver to my bose speakers, which is also hooked up to a subwolfer. When I turn the volume up the system goes into protect mode. Any solutions.


Just check your speaker cabling again. Make sure that all of them are seated properly, none is touching each other or the body of receiver. Rewire if necessary..
Are you using banana plugs for connecting speaker or just directly. Some times even a little tiny wire touching the receiver could trigger the protect mode. Be careful, since protect mode is sometimes not fast enough and it could blown a few trasistors in the power circuit.

Otherwise, do your bose speakers play out load on other systems?

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