Having Problems with a Denon Amp:

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Having Problems with a Denon Amp:

Hello, My Denon Amplifier (AVR3300) is suddenly making a white/hissing/buzzing noise. I can not listen to CD's, DVD's, Stereo, or the TV because the noise is too loud, especially during quiet or soft moments.

But here's the kicker: If I blow a powerful blast of air into the amp (via the air grates on top), the buzzing stops for a few seconds and then comes back.

I tried to fix a small stereo fan to blow across the top of the amp, but to no avail. Does anyone know what's wrong or what can be done about this, or even point me in the right direction? Thank you very much.



How did you figure out the

How did you figure out the blast of air thing? That's pretty good. When buzzing, hissing, popping, crackling, etc., you get the point, occurs it usually indicates a faulty connection or electronic noise created by one of the components connected to your receiver or worst case, the reciever itself. I doubt it is your connections (interconnects), but it is good practice to check any how.
Is it next to a TV, more specifically a CRT display? If so try moving it. There is shielding in the reciever to protect it, if it has been compromised CRT's will cause your reciever to generate noise, I experienced that problem first hand.
I also had components generate noise and transmit it through the system regardless if it is the source selected or not, and even when the indidual component was turned off. So, turn the AVR3300 on and completly disconnect components one at a time and see if that remedys the problem(including video). Then go to speakers (disconnecting speaks. for a few seconds won't hurt the amp, however it may trigger a protection mode, just a heads up, if it does power down than power back up).
From an engineering stand point:
If you blow air into it and it stops temporarly then it could be a heat issue, if it is than it would make sense that when you first power up, no noise would be generated. If that the case, a trip to the repair shop may be nessesary. If its internal you may have to get it serviced, check manufact. warranty.
Lastly, and ill stop jabbering, try resettng to factory defults if nothing else works, you'll be amazed that sometimes thats all that is needed (electronics work in strange and mysterious ways).
Good Luck, let us know how it goes.

Thanks for the feedback. You

Thanks for the feedback. You've given me a lot of food for thought. I will check out all of your suggestions. The more I think about it, the more I think it may be a heat issue because I recall (and I may be wrong - I have to take the whole thing out and really look it over) that there MAY have been an internal fan that I sometimes heard if i was working on the back of the system and I don't hear one anymore.

One other thing: I know I'm going to kick myself in the head once you tell me, but for the life of me, I am drawing a blank on what a "CRT" stands for (it's one of those "how do you spell 'the'" moments).



Cathode Ray Tube, fancy talk

Cathode Ray Tube, fancy talk for a good ol' tube TV.


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