Question about Denon Audio & Video Receivers

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One speaker channel will not work - going from intermittent to completely dead.

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  • Jimania Jul 18, 2008

    I'm old school (lol) - it's a Denon DRA-555 which I love. It's like an old friend.



    There was a period where it required "cheating the balance to get that channel to play and then it stopped altogether. I had switched speakers to check it and it is def the receiver.



    This unit has the A/B speaker jacks. The "A" has the dead channel and the "B" has one channel that is weak.



    Any ideas are appreciated. I'm a handy guy but this is not my thing so it's going to the shop. Having an idea of the nature of the problem and rough $$$ would be great. Thank you!

  • Jimania Jul 18, 2008

    You are the man! I bought a $10 can of contact cleaner at Micro Center, spent about 30 minutes to visually inspect the unit and apply the cleaner at the speaker balance knob and at the speaker terminals. Turned, twisted and cleaned up with a few Q-tips. Hooked everything up and now I'm back to stereo!



    Thank you very much! Outstanding advice!

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  • 624 Answers

It is possible that the speaker that is intermittent is causing the problem. Try disconnecting the speaker and see if the unit stays on and plays on all other channels. If it does, then try connecting one of the other speakers into that speaker jack and see if it still plays ok. If it does, that speaker is causing a problem. If the unit still does not operate properly after disconnecting the intermittent speaker or with a different speaker connected, the problem is most likely in the receiver.

When you say it is completely dead, does that mean that after you turn the receiver on, it shuts itself back off in just a few seconds? That is the "protect" mode of the receiver. It most likely has a bad output channel in the receiver and would not be anything you could fix yourself unless you are very good with soldering and checking electronic components.

I work at a Denon authorized service center and repair between 5 to 10 Denon receivers a week. The process of fixing them is not an easy one and is not a good idea to try and do unless you have the proper training and tools. But if you are wanting to try it yourself, I could be some help for you. I would need to know the model number, probably an AVR-????
I have the schematics and part numbers available for you if you need them.

Any extra information as to how the receiver is acting would also be helpful.

Since most Denon receivers are very good and on the expensive side, they are worth fixing. A bad channel normally runs about $150 to fix, but it does depend on exactly what is wrong with it. They are never just one part that is bad, it is usually about 5 to 10 parts that must be replaced. That is why it is important to be able to check the components properly, if you miss one bad part and then turn it on, you will usually destroy the parts that were just replaced.

Let me know if you need any help or advice on how to determain the exact problem. It will require more detail.

Dave

Posted on Jul 18, 2008

  • Dave DeGain
    Dave DeGain Jul 18, 2008

    This may just have some oxidized switches and/or some bad solder joints. If this is the caseyou may get out of it with $100 or less. But that also depends on the shop, their rates, and their honesty. Without looking at it myself, I could not be certain as to the problem, there are just too many things that can cause the same type of symtoms. The balance and the speaker switches could be cleaned and fix the problem. If you get some electrical contact cleaner and spray it into those switches and then work it in for a few minutes on each switch, you just might avoid the repair shop all together. Just try to get the contact cleaner into those switches, in fact, get it into all the switches and controls. You should only need to do minimul dis-assembly for this, and the contact cleaner, if it is made for electronics, will not harm the inside of the unit. If you ever hear scratchy and crackling type of noise form the speakers, it could just be those switches and controls needing to be cleaned.



    Dave

  • Dave DeGain
    Dave DeGain Jul 19, 2008

    I am glad I could be helpful, thanks so much for the compliment and the rating.

    If you ever need any help, you know where to find me!

    Dave


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