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Power on but no display on Denon AVR 3705

I have never had any problems with my 3805 until Sunday, when the volume changed suddenly, then no volume and the screen display went off.  The green circle Power On/Stand By switch stayed on.  I pressed (turned off) the On/Standby switch and the circle turned to red, as it should.  I pressed (turned on) the On/Stand By switch, the green circle blinked then stayed green, as it should,  but the display did not light up and there is no sound.

I tried powering up using the Power Switch and unplugging the AVR but the result was the same.  The green circle would blink, then go solid green but no display and no volume.

Is there something I might try other than disconnecting the system and taking it in for repair?

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Re: Power on but no display on Denon AVR 3705

By now the folks who asked this have certainly solved their problem, but in case anyone else has this same question:
If the color change from red to green on the Power button indicator light and stays that way, the receiver is most likely working fine, it's just that your front-panel display is OFF.
1. Check the DIMMER mode by pusing the buttom on the front panel -- it may be set to OFF.
2. Push the PURE DIRECT button on the front panel (or remote control) -- it may be ON, which turns off almost all of the front-panel display. (Alternately, change the AV source, which turns Pure Direct OFF.)
HOWEVER if the power light flashes rapidly, the amp's overload protection circuit may have been triggered by a feedback loop or other problem, such as a shorted or bad cable connection. Turn off the power and unplug the receiver. Look for problems starting with shorted speaker wires or cables. Then make sure the receiver's not still hot (wait 5-10 minutes to let it cool), and remove obstructions or anything blocking the top vents. Plug it back in and power up again. Immediately change the Source selector to something unconnected, and turn the Volume DOWN just in case there's a feedback loop (hum/squeal/noise that can overload things and cause the protection circuit to trip again). If you can see the display, go to a low level (around -50dB should be fine) before the delayed speaker amp output clicks on. Then carefully switch back to the problem source -- if that's the problem, switch off again immediately and re-check all of the cable connections at both ends, the receiver and the source component, and make sure you don't have a feedback loop due to a recording device feeding back a signal. All VCRs and CD/DVD-recorders should be hooked up to the VCR, DVR or TAPE/CD-R "IN/OUT" jacks with IN being connected to the cables marked OUT on the deck and vice versa. (That confuses even us experienced guys sometimes!) Also, no MONITOR video or audio outputs should be connected to the recording decks, nor should the TV outputs be fed back to the recorders. The same goes for the digital IN/OUT jacks for CD recorders; use only the same number IN as OUT for each component (Optical IN/OUT #4 and #5 are the two digital IN/OUT pairs on the AVR-3803).

Posted on Jan 28, 2010

Re: Power on but no display on Denon AVR 3705

I have the same problem! Someone please help us

Posted on Jan 26, 2008

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