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Powers on 5 sec then powers off

Hi My avr 681 Powers on stays on for about 5 secons and then powers off . is there a reset or somthing i can do or is it junkyard bound powers on 5 sec then powers off stanby blinks

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If it goes off even with no sound, system is put on stndby protection mode. something wrong with your output section. busted power output xtors of IC.

Posted on Mar 18, 2008

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My Denon AVR 1610 has no display. Power comes on but nothing else. I have tried reset but does not help

First off, you will need to listen carefully at the top of the receiver. With the unit unit off, as you push the power button, you should an immediate click. Within 5-20 seconds, you should hear another. If you hear the second click, the amplifier is probably not damaged. In that case, you have a display microprocessor IC(computer within your receiver) bad, of some voltage to the IC is missing. If you require more information, or would like to inquire about having it repaired, please visit my website ay You may contact there. Thank you.

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AVR 2800 powers up and shuts off and lite blinks

Generally speaking this means a fault in the power output stage of the amp, which is the part in the pcb where the Output Transistors and the Aluminum Heatsink are, hope this helps.

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Denon avr 1909 powers off after just a few seconds

Check to make sure no speaker wires are shorted or shorting and if those are okay, chcek the capacitors in the power supply section- there are likely a couple needing replacement. If none show outward sings of failure such as bulgin, just recap the power supply section with new caps- make sure they are high ripple current types.

Mar 24, 2012 | Denon Audio Players & Recorders

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Denon avr 3805 is blinking red and blinking green and won't stay on

Do a reset to the set. Just unplug it from AC mains wall socket and replug it after 3 minutes or so; or just go to ints user manual to know, how to reset it to factory defaults, and do it. OK.

Jan 19, 2012 | Denon Audio Players & Recorders

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How do I restore factory defaults on my Denon AVR-2809? I can't see it in the manual. Thanks

Register and download the USER GUIDE (10.6MB) for free at

Page 60

Resetting the Microprocessor

Perform this procedure if the display is abnormal or if operations cannot be performed.

When the microprocessor is reset, all the settings are reset to their default values.

1 Turn off the power using <POWER>.

2 Press <POWER> while simultaneously pressing
3 Once the display starts flashing at intervals of about 1
second, release the two buttons.

Mar 30, 2011 | Denon Audio Players & Recorders

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Powers up then go off after five sec, o/p pairs ok. on sound just sits there.

If the output pairs tests OK, then either the driver circuit is fried or there is a voltage offset that is kicking in the protection circuit. Check the voltages for +/- values on both pairs. They should be equal and opposite. Update this with what you find.


Jan 11, 2010 | Yamaha DSP-A1000 5-Channel Amplifier

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Denon AVR 1706 Powers on display then shuts off lght blinks red

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?

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Apr 05, 2009 | Audio Players & Recorders

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Fisher ca 9025 amplifier

The amp is in protect mode. Something in the final stage is defective. This is usually caused by shorted output transistors. This unit is worth getting repaired. Expect a parts cost in the $25-$50 range.


Dec 03, 2008 | Audio Players & Recorders

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