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I had my denon setup and working and about 6

I had my denon avr-789 setup and working and about 6 months later it turns itself off and when I turn it back on it pops and the red light starts to flash...

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It's going into protection. Check your speaker wires at the receiver, make sure none of the braids from the + to - are touching. Then if you still have the problem, disconnect the wires at the speakers and test power. If your receiver still shuts down, disconnect the speaker wires at the receiver and test. If the problem persists, it is a problem in your receiver and it needs serviced. Hope this helps. If you need further help, post a comment and I will help you further.

Posted on Nov 19, 2009

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1 Answer

Denon AVR 789 no display


Time to send back to Denon (seriously). Hopefully you have a warranty on your product (I bought mine at Fry's and it took a few months for the warranty work to be performed). Good luck!

Jan 15, 2012 | Denon AVR-789 Receiver

1 Answer

I had the unit set to a second zone that ran into a splitter for four different areas of my house. The second zone is not working, how do I test to see if it is the denon unit or the splitter ?


Plug something other than Zone 2 into the splitter, say, any tape out on the Denon. Keep it simple. Play FM.

When and if THAT works go back to the manual and analyze why Zone 2 isn't working. Observe the Zone 2 Output indicator. (Page 5)

You must have a TV or other speaker-capable device that you can run Zone 2 OUT to. Try that to prove your setup works.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Denon-AVR-789-Receivers-manual/id/23110dj895/t/2/

Page 17, 30, 31, 57,65- 68 (you get the idea).

Jun 20, 2011 | Denon AVR-789 Receiver

1 Answer

Hi, I have a Denon AVR 789 and just on the weekend I went to turn it on and it turns on for about 2 seconds then turns off and flashes red a few times. I turned the power off for a while and unplugged it...


Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.


Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.


Check for loose speaker connections as a root cause for intermittent shutdown.

Feb 07, 2011 | Denon AVR-789 Receiver

1 Answer

Power button turns green, flashes and then turns red and flashes.


Hi,
While working it stops and flashes red approximately 2 seconds interval

Causes
Protection circuit is activated depending on the temperature of the surroundings

Remedy
Switch off the power supply and power on after the temperature have reduced.


While working it stops and flashes red approximately 0.5 seconds interval

Causes
1.Using speakers having less impedance than the specified.
2.If speaker core wire touch each other Protection circuit is activated


Even applying power red flashes 0.5 seconds interval

Cause
Amplifier circuit has failed

Remedy
Switch off the power and contact denon service centre


Thank You

Sep 07, 2010 | Denon AVR-789 Receiver

1 Answer

Denon AVR older receiver but worked fine; now


Did you try to reset the unit? Resetting the unit has fixed every problem I have ever had......turn off unit.....hold down A+B at the same time then turn the unit back on...hold buttons for roughly 3 seconds....Let me know if it works.

Aug 20, 2009 | Denon AVR-1908

1 Answer

I have a Denon AVR-488..Can you help?


Sounds like you may be clipping your speakers. Check all speaker connections and make sure they are not touching, at all. If you are not using speaker ends and are simply twisting the wire and connecting to the speakers, just one strand touching the other post will cause this. Good Luck

Jun 02, 2009 | Denon AVR588 Receiver

1 Answer

Denon av receiver switches off


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?

Feb 19, 2009 | Denon AVR-2801 Receiver

1 Answer

How can I find out what all the sound settings realy mean on an AV-789


Hello plyscott,
My name is David thank you for using FixYa.com for your answers.

I have found the denon site that should answer all your problems about the AV-789
At this site there is material you can download with all the info in it.
http://usa.denon.com/1766.asp?modelSearch=true&clearArchive=true&category=AV&model=AVR-789&imageField.x=17&imageField.y=8
Again thank you for choosing fixYa.com

Nov 06, 2008 | Denon Audio Players & Recorders

3 Answers

My Denon AVR-887 Keeps turning itself off


I have one and the same thing happened. try resetting your microprocessor and if that does not work, then check the wiring of the speakers. if that is working fine and no wires are touching then I unplugged everything and was still having the issue. took it in for service and it was found that the transmitor was shorted as the speakers that I was using was too high in ohms. it is possible that it could be your caps also if resetting the microprocessor does not help. You can find out how to reset the microprocessor from your manual. If you have the Denon avr 887 with the system turned off hold the power on button and the speaker A and B at the same time for a few seconds. This is compatible to rebooting your computer. Hope this works for you as this was and is my husbands favorite past times.

Dec 01, 2007 | Denon AVR-887

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