Question about Denon AVR-1508 Receiver

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My Denon AVR589 just started crackling like rice krispies, I've tried resetting the microprocessor, but no luck it still crackles. Is my unit fried?!

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Is the sound from the unit itself (airborne) or is it through speakers only?

If the former, turn it off and take it to a tech to figure out what's sizzling in there.

If the latter, is it specific sources and/or specific speakers?

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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Avr-5700 One of my channels is crackling. I was told some kind of reset would help.


You can reset your reciever by completing three simple steps

1.Switch off the unit using the main unit's power switch

2.Hold the following DIRECT button and STEREO button, and
turn the main unit's power switch on.

3.Check that the entire display is flashing with an interval of

about 1 second, and release your fingers from the 2 buttons
and the microprocessor will be initialized.
If step 3 does not work start over and attempt again. Be aware this will reset all setting to factory defaults. Hopefully this helps.
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I think you may have a blown speaker.

Sha'ul

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HDMI is a High Definition Multimedia Interface and has the capability to transmit both AUDIO and VIDEO all in one cable. Your setup right now is transmitting 2 audio frequecys (L/R stereo RCA and HDMI) into the Denon inputs. Not necessary! I would recommend eliminating the red/white audio cable from the direct tv box to the Denon.

After doing such, your receiver should be able to process audio/video signals appropriately. REMEMBER to unplug all POWER CORDS before reconnecting any speaker/audio/video cable, as it may cause a small electrical surge and fry a micro component in your system!

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1 Answer

Denon avr-1909 crackling sound while watching Uverse HD.


It may may the the AT+T box is really not compatible with the AVR or the Pioneer.

Check the specs on those input/outputs for the Ubox and the receiver.
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This should resolve your propblem... taken from the Denon USA FAQ...

You’ll rarely need to "initialize the microprocessor" under normal operating conditions. In a few cases, the microprocessor will temporarily freeze or "lock up" just as your home computer does. When this happens, just follow the guidelines in the back of your owner’s manual to "unlock" the microprocessor and restore normal operation. (This is directly comparable to rebooting your computer. It’s an electronic wake up call to your unit’s temporarily paralyzed microprocessor "brain.")
If you experience some unusual behavior -- a channel that’s suddenly silent, "forgotten" level adjustments, some eccentricities in your unit etc. -- you may need to reset the microprocessor. Of course, you should check all connections carefully first. But if you’ve eliminated these items as a source of potential problems, you may need to go through the initialization process.)
Initialization is easy. Please refer to your owners manual for instruction on reseting the microprocessor as each unit may have its own individual protocal for reset.
What causes these problems? Several things can -- a jolt of static electricity, a current surge through an antenna input, etc. But don’t worry, the microprocessor is well shielded from any permanent effects.
When you do initialize the microprocessor, remember that this erases any setup instructions you may have previously programmed into the unit. However, the on-screen menu will quickly get you through a new setup. And, if you write down your preferred settings BEFORE you reset your unit’s microprocessor, you’ll have an even easier job!
If in the event you do intialize microprocessor reset please refer to your owners manual for instructions on setup..

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1 Answer

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You have fried some of the circuitry take it to a service dealer and have what ever is fried up replaced...

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1 Answer

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The noise is in the pre-amp stages of the Denon AVR. It might be caused by bad capacitors.

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