Question about Denon AVR-2805 Receiver

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No output After 3 years of heavy usage, my AVR 2805 now gives only intermittent audio output.  For the past several days, whenever I turn it on, it will  not output any audio for TV, DVD, VCR or even the tuner.  I've checked all the settings and the input is set to automatic.  If I turn the receiver on and off several times, sometimes the audio comes back.  If it does come back on, whenever I turn it off, the next time I go turn it on, there's no audio.   I am using optical cables for the DVD and the satellite TV.  Any suggestions? denon avr-2805 no output on any of the outputs

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  • giol Apr 25, 2008

    no I do not any click from a relay.I know that the amp made a loud humming noise before the sound went dead.after that all outputs no longer worked.

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Hi giol

This is normally an IC or two that has gone due to either poor soldering or ageing.

I wouldn't recommend you try and fix this by yourself. Rather take it to a Service Centre.

Posted on Apr 25, 2008

  • Marnus Jacobs
    Marnus Jacobs Apr 25, 2008

    giol



    If you do however decide to investigate this problem on your own , leave the AMP for at least 2 hours switched off before you even think of opening it.



    Once you've got the cover off , you will be looking for the board with all your outputs on it. Check for any black markings on the soldering.



    If you cannot see any marks , plug in the AC and try checking for any irregularity on the board.


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Well, you can open it up and look for anything that looks fried a little or loose. Make sure you have it unplugged when you do this and you will be fine.

Maybe a gentle shake will show you what might be loose or broken.

Otherwise something might just be on the verge of burning out totally. Have a look and let me know what you find.

Thanks

Posted on Apr 25, 2008

  • Benjamin Patri
    Benjamin Patri Apr 29, 2008

    Please don't forget to rate this solution as that is one of the biggest aspects of all this website works



    otherwise please let me know if you have further questions



    Thank you

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I have seen a number of these with similar symptoms. Usually it is caused by poor solder connections. This is due to heat cycles and is normal. If this one follows the pattern, the repair would entail resoldering the voltage regulator circuit and perhaps the driver circuit.
Dan

Posted on Apr 16, 2008

  • ABRsvcs Apr 24, 2008

    For what it is worth, there are no erlays for switching the inputs, this is handled by electronic switching chips. There will be no relay action when changing inputs. There should be a relay click on turn on as the output section is engaged.

    Dan

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Probably a input switching relay problem. When you switch inputs you should here the click of a relay, do you hear that click?

Posted on Apr 16, 2008

  • Dean Joly
    Dean Joly Apr 28, 2008

    Ok, sounds like there is an electronic fault inside. Did you open it up to look at the components? Look for anything that looks burnt, leaking, loose, or broken.

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