Denon AVR owners: troubleshooting help please! - AVS Forum
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post #1 of 11 Old 12-05-2007, 08:57 AM - Thread Starter
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Normally I would call tech support, but I have to run to work so I wanted to throw this out there to see if I could get my problem solved through the collective wisdom of AVSforum:

I have an AVR 2105 that I bought used recently, but it's in great condition and has been working flawlessly. This morning, I turn the power on to listen to some music, walk away, and then I hear the relay "click" as it turns off.

I try to turn it on again, it turns back off after a few seconds.

This is the sequence:

1. Hit the power button (the on/standby one)
2. Everything starts up normally, the light around the power button is flashing slowly green.
3. The display goes through its normal sequence: "Digital" then "AV Surround" then "Receiver", with a couple of normal-sounding relay clicks.
4. Right after the word "Receiver" disappears, the unit gives another relay click and shuts off completely.
5. Right as it shuts off, the light around the power button is now flashing orange about 2-3 times a second.

Like I said, had no time for thorough troubleshooting but i tried turning the main power button off for a minute, and then when I turned it back on the power light was now solid orange like it should be. But when I hit the "on/standby" button to turn on the receiver, the problem happens again. Happens every time, with the net result being that the orange light is sitting there flashing at me. I turned the main power off and unplugged the unit and went to work.

Any thoughts on what this could be? And suggestions for troubleshooting options when I get home from work?

THANKS!

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post #2 of 11 Old 12-05-2007, 09:01 AM
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Disconnect all your speakers and try it again.

If it stays on? I'd suspect a speaker or wire issue. This can also be an AVR failure, but most times it is a speaker and/or wire issue.
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post #3 of 11 Old 12-05-2007, 09:25 AM - Thread Starter
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Thanks for the reply....

Weird, why would speaker wire cause the AVR to shut itself down after the boot up sequence? Is the AVR detecting a short or something?

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post #4 of 11 Old 12-05-2007, 09:56 AM - Thread Starter
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Also, I should add that I attempted the "microprocessor reset" in the manual, where I hold down the speaker A+B buttons while powering on, and this did not solve anything.

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post #5 of 11 Old 12-05-2007, 10:28 AM
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Yes, also a blown or marginal driver in one of the speakers can do it too, also a blown or marginal crossover in a speaker as well.

This is by far the most common cause of an AVR shutting down.
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post #6 of 11 Old 12-05-2007, 10:34 AM - Thread Starter
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Hmm, good to know, thanks. I fired off an email to Denon tech support describing the exact symptoms. I'm going to go home at lunch and do some more troubleshooting.

Any more suggestions would of course be greatly appreciate.

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post #7 of 11 Old 12-05-2007, 11:21 AM - Thread Starter
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bump? Anyone have any more suggestions before I head home for lunch in an hour?

I'm sure this type of thing has happened before, it seems like a specific problem that should have a specific cause. Thanks in advance!

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post #8 of 11 Old 12-05-2007, 01:52 PM - Thread Starter
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Denon tech support says flashing orange light = internal problem

They can't help me on the phone, gotta take it in for service. Thanks for trying JohnDenver, but unplugging the wires didn't help.

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post #9 of 11 Old 12-05-2007, 02:02 PM
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It happens. Sucks, but it happens.
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post #10 of 11 Old 12-14-2007, 09:38 PM
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Quote:
Originally Posted by batpig View Post

bump? Anyone have any more suggestions before I head home for lunch in an hour?

I'm sure this type of thing has happened before, it seems like a specific problem that should have a specific cause. Thanks in advance!

Hey, I have a DENON AFR-4800 which has the same problem since last week.

One question to you, does your Denon have a vent fan? My 4800 would shut off if volume gets higher with red flashing light. I have to lower the sound level to keep it working. I suspect that the vent fan fails. But it should get very hot before it shuts off. It does not. So that may not be the reason.

I would like to know how much does it cost to have it repaired. I really don't want to send this 45lb baby to Denon and spend $500 on it. I bought it new 6 years ago for only $1000. It may be time to upgrade although I don't have the budget

Thanks.
Roy
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post #11 of 11 Old 11-10-2009, 10:39 AM
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Hey I have almost the same issue, mine did start out the same as yours but now it just turns off and blinks, I pulled the cover off and there is 1 of the fuses that blows as soon as it is replaced and powered on again, so something is shorted out inside. I am taking it to a local Denon repair shop in Scottsdale, I will let you know what they found.
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