Question about Denon AVR-2105 Receiver

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Denon avr2105 when u turn the power on green light flashes about 4 times and powers off when powered off red light flashes

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Re: denon avr2105

See this post:

Sounds like the same problem to me...

Posted on May 26, 2008

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No power output or standby light flashes.

Sounds like either a blown mainpower fuse or the thermal fuse for the power transformer. If the protect circuit was kicking in, the display would light up, but then turn off with a red blinking light. the green light with no display means the transformer is not getting power.

Dec 31, 2013 | Denon Avr-1610: 5.1 Ch A/V Home Theater...

1 Answer

Denon avr 1312 green power flashing green 7 times

Sounds like a bad power transformer. Would need to go in for repairs.

Jan 09, 2013 | Denon AVR 1312

1 Answer

The green light flashes when power is turned on and then flashes red and turns off. Can this be reset ?

what do i do when my DENON AVR-1506 turns on then flashes red and turns off?

Mar 08, 2011 | Denon AVR-1506 Receiver

1 Answer

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

While working it stops and flashes red approximately 2 seconds interval

Protection circuit is activated depending on the temperature of the surroundings

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

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

Amplifier circuit has failed

Switch off the power and contact denon service centre

Thank You

Sep 07, 2010 | Denon AVR-789 Receiver

1 Answer

I have a Denon AVR 1509 and when I turn the power on it flashed green but after about 2 seconds it cuts out and and then flashed red every 0.5 seconds.

Usually its the power output stage . You can visibly check it if theres a burned resistor on the output amplifier. On the base of the Power output transistor if the voltage is the same as the collector pin it will indicate a shorted power amplifier circuit.

May 20, 2010 | Denon AVR-1508 Receiver

1 Answer

Power Button Flashing Red

Try unplugging the entire unit and letting it sit for 5 minutes. See if this helps. If not, you need to do a complete reboot, which will cause you to lose your settings, but will probably solve your problem. To do a complete reboot, you will need to hold down two of the front bottons on the front panel. I'm not sure which, so either consult your manual or see other posts here which describe the reboot process for Denons. Hope this helps.

Dec 14, 2008 | Denon AVR-1908

3 Answers

Denon avr 2105 died (3 times) dead AVR2105 faulty avr-2105

If your amp looks like it's going to work as normal (ie the front display lights up as it should etc), but then the amp goes into protection mode when the anti-thud circuit times out, then I know what's likely to be wrong.

It's one of the power amplifier channels which has gone faulty.

I just found this out after having this problem with my AVR-1906.

I took the amp apart and de-soldered the suspected channel power transistors (centre channel in my case).....and hey-presto! it fired up as normal (obviously the centre channel would be out of service).

I have ordered the replacement transistors from Farnell (UK) at a miserly cost of around £2-£3 each.

Just waiting for them to arrive.

An alternative is, if you don't use all your channels, take the transistors from a known working but not needed channel and swap them over with the duff ones.

Hope thats of use!

Jul 19, 2008 | Denon AVR-2105 Receiver

1 Answer

Power wont stay on

Hope your under warranty mate and if so hope its not in Australia as they cannot fix this problem. My denon was allegedly fixed twice but has now failed a third time (just out of warranty) and denon have turned their back on me.

Jul 08, 2008 | Denon AVR-2105 Receiver

2 Answers

Denon avr-2106 problem!!!

You're drawing too much power from it. Sounds like maybe your sub is hooked up wrong, double check that.

Mar 06, 2008 | Denon AVR-2106 Receiver

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