Question about Denon AVR-2105 Receiver

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Power wont stay on

When I power on the unit, it comes on (green light on for about 4 seconds then power shuts off with RED light around power button.

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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.
SHAME ON YOU DENON.

Posted on Jul 19, 2008

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1 Answer

Unit only stays on for 4 seconds then turns itself off.


This is a short or unstable ohm load. Remove all speaker wire connections to see if the amp will stay on.
If the problem goes away when disconnecting the speaker wires try this:
1) Check volume level on zone one and zone 2 if connected. If it is too high the amp will go into protect mode and shut off exactly as you described.
2) Make sure no wires are touching any other wire or the metal surface of the amp. This will cause a short and send the amp into protect mode.

Nov 21, 2009 | Denon AVR-1705 Receiver

1 Answer

After turning ON the power/standby switch, the unit(receiver) display comes ON (green light) then after approx.4-5 seconds the display goes OFF and the unit defaults back to the standby mode (red light). I...


Is the red light flashing at first?
The unit may be going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps2_bing.gif metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers2_bing.gif are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

Nov 16, 2009 | Denon AVR-485 Receiver

1 Answer

I have a denon 1909 reciever.


The unit is going into protection mode. This means that a problem was detected and the unit shuts down to prevent further damage. Examine the speaker wires to be sure that they are not crossed. If they seem OK, remove them and attempt to turn on the unit. If the unit behaves the same, then the problem is internal to the receiver. The most common cause of this is shorted output transistors. These are relatively inexpensive. Expect a parts cost in the $30 range. Add in the local labor rate for the entire repair cost. Dan

Jun 06, 2009 | Denon Audio Players & Recorders

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

1 Answer

When i power on the device, it comes on but goes off about 5 seconds later.


Hi...

1st thing to check is for GOOD speaker connections at both ends
and not mixing A and B speaker wiring.

A Denon is usually a good brand. Might be worth servicing if need be.

Sep 20, 2008 | Denon AVR-1905 Receiver

1 Answer

Red ring


speakers terminal maybe short circuit------connect it properly.
---ventilation holes are blocked----turn it off let it cool down and turn it on.
-------the unit is operating in continuous high power condition---turn it off-----and let it to cool down.-------turn it on.

----

Aug 04, 2008 | Denon AVR-2307 Receiver

2 Answers

Denon AVR-1705 won't power up


when i turn it on it stays on for 3-4 seconds then shuts down

Jun 27, 2008 | Denon AVR-1705 Receiver

1 Answer

Power comes on for only about 4.5 seconds, then shuts off.


1-speakers terminals are short circuit----turn it off and correct speakers terminals.
2-blocking of ventilation holes of the set -------turn it off and let it cool down and make a good ventilation around ventilation holes.
3-the unit is operated at continuous high power condition------turn it off and let it to cool down and then turn it on.

Dec 11, 2007 | Denon AVR-2802

1 Answer

No Power


I mwas gonna suggest that you need the speakers attached but you stated later that it did the same thing with the speakers attached. The unit switching off after it checks its self is NOT a normal thing. TAKE IT BACK BEFORE ITS TOO LATE!! GOOD lUCK

Jun 18, 2006 | Denon AVR-1706 Receiver

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