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My denon receivers keeps cutting out and on the display it says protect . what can u suggest

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If you are a technician change the audio amplifier IC because are damaged or send to a repair shop

Posted on Jun 15, 2009

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1 Answer

Denon avr2312ci shuts off and blinks red


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.

Jan 23, 2014 | Denon AVR-2312CI

1 Answer

Protection


I just had this same problem and called Denon. I was told to unplug the unit and unplug all attached to it. Then, push both the tuning buttons at the same time (both the up and the down) hold them in while plugging the Denon back to the electrical. Watch the front of the Denon and see 5 cycles flash on the tuner display and then let go of the tuner buttons. Then plug things back in.
That helped the protect thing for minutes. I redid it several times.
No good. One of the channels blew out. I would now get rid of it for parts. I have not had luck with Denon.

May 11, 2013 | Denon DRA-775RD 2 Channels Receiver

2 Answers

Denon AVR-1803 keeps shutting down


check your speaker wires make sure none are touching each other this will cause a short and shut the reciever down

Mar 17, 2009 | Denon AVR-1803 Receiver

1 Answer

Denon AVR-3802


I have repaired many of these Denon receivers over the last few years.

Since the headphones work, that means if you dis-connect the speakers it will turn on and not go into protect (when power cuts off a few seconds after turning the unit on).

The most likely problem is a bad speaker. to find out which speaker is causing the problem, do this.

Start out with just one speaker connected and then turn on the unit. If it turns on and plays music, you know that speaker is good.
Now turn the unit off again and add another speaker and keep the first speaker connected. Once again, if the unit plays, that speaker is also good.

Keep doing this same procedure one speaker at a time. As soon as you connect a speaker and then try to turn on the unit and it goes into protect, the speaker you just connected is bad.

To confirm that this speaker is the bad speaker, dis-connect all speakers and only plug the suspected bad speaker into a speaker jack that worked with one of the other speakers.
If the unit still goes into protect you know then that you have found the bad speaker.

If the unit still goes into protect, that speaker is bad and you will need to take it in for repair or replace it.
make sure you use 8 ohm speakers. if i remember correctly these Denons can use 6 ohm speakers, but those are harder to find and most home speakers are 8 ohms.

If the unit does not go into protect and that suspected bad speaker plays in one of the other speaker jacks, what you really have is a bad channel in the amplifier, the channel that the suspected bad speaker was previously connected to.

If you find out you have a bad channel, you will need to take it in to an repair center. Preferably an authorized Denon service center. There are not very many of those around. I work at the only authorized Denon service center in the entire state of Michigan.

If I can be of more assistance, don't hesitate to ask. And a good rating is always appreciated. :)

Jun 22, 2008 | Denon AVR-3802 Receiver

1 Answer

Denon avr-5600 protection circuit.


My AVR 5600 has worked flawlessly for nearly 9 years!

Suddenly, when trying to play music (DVD or CD) through my LS32's (JBLPro), once I achieve higher volume, the receiver cuts off.... Using a Symetrex mixer, NO OVERLOAD light on the Denon, it simply cuts off!

Re-cut all the wire connectors... TV movies (5.1) work great at normal listening volumes.... but tonight, when cranking up music, the receiver simply cut off. Blinking light...

HELP

forfrance@hotmail.com

Apr 12, 2008 | Denon Audio Players & Recorders

3 Answers

What failed component causes protection error message to display right at power up.


well, i just got this thing from a friend. its a Denon AVR-800. when powered up it displays the stops, just before finishing a -protect- shows up. There's a little red light standby light that blinks off and on also. i think that has to do with the internal problem. any suggestions?

Apr 03, 2008 | Audio Players & Recorders

1 Answer

Protection on display


disconnect everything from the unit and see if it still does it.
if it does i would check the output transistor (ic).

Jan 25, 2008 | Denon AVR-1506 Receiver

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