AVR-1908 Crackling/Popping Randomly - AVS Forum
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post #1 of 8 Old 04-26-2011, 10:55 AM - Thread Starter
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I've been having an issue with my Denon AVR-1908 where, randomly, it will cause the speakers and the sub to begin crackling and popping sporadically and then it will go into protection mode (standby light flashing red). I have a Comcast Motorola HD-DVR and Samsung Blu-Ray both connected to the recieve via HDMI. I have felt around on the reciever immediately after it enters protect mode, but I haven't noticed any excessive heat. The reciever is plugged into a surge protector, along with a Klipsch powered sub, the TV, the cable box, and the blu-ray...could this be the problem? Also, the RS/LS speakers are using 20 ga speaker wire (approx 20'-25' runs for each of the surround speakers. Could the rear speaker wire gauge cause an issue like this? Is there any way to determine whether the reciever is the problem? Like I said, I can have the AVR on for 8 hours, and there may not be any issues, but on other days it may only last 10 mins before entering protection mode. Seems completely random. Also, power doesn't appear to make a difference. My wife was watching TV this morning while the rest of us were asleep (approx -40dB) and it still started crackling and went into protect mode.

Is anybody able to offer any advice on this? Thanks in advance!
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post #2 of 8 Old 04-26-2011, 11:15 AM - Thread Starter
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BTW, this is my first post here. Is this in the right place?
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post #3 of 8 Old 04-26-2011, 12:30 PM
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Sounds like an amp problem which would require repair/replacement. Try resetting the microprocessor (check for the procedure your Owner's manual). Check out the new XX12 models just now being released as it will likely be more cost beneficial to replace it rather than repairing it unless you have an extended warranty that still covers it.

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** Think the AVR is defective?  Reset the microprocessor 4-5 times. 
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post #4 of 8 Old 04-26-2011, 12:41 PM - Thread Starter
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Quote:
Originally Posted by jdsmoothie View Post

Sounds like an amp problem which would require repair/replacement. Try resetting the microprocessor (check for the procedure your Owner's manual). Check out the new XX12 models just now being released as it will likely be more cost beneficial to replace it rather than repairing it unless you have an extended warranty that still covers it.

Yeah I was afraid of that. I tried a microprocessor reset, to no avail. I've been digging around online for a new reciever.

Is it definitely going to be more cost effective to buy a brand new AVR rather than having this 1908 stripped down and repaired?

Thanks!
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post #5 of 8 Old 04-26-2011, 12:44 PM
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Best guess is $250 - $300 to repair, although doesn't hurt to contact a repair center to get an estimate ... could be lower.

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** Think the AVR is defective?  Reset the microprocessor 4-5 times. 
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post #6 of 8 Old 04-28-2011, 10:46 PM
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I have a Denon 788, which I believe is the same as the 1908, though that I'm not sure of.

I've been noticing a random crackling and popping in the last 2 weeks too.

At first I thought it was my Bluray player, but now I'm thinking its the receiver, in fact I know it is, because I'm noticing it on my Sony 1000ES Bluray player and my PS3, which are connected to HDMI 1 and 2 respectively.

This really sucks!!!!!
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post #7 of 8 Old 04-29-2011, 05:32 AM
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A capacitor in an amp may gradually fail over time (excess heat can accelerate the failure). In some cases, the amp will make intermittent popping/crackling sounds that slowly increase in frequency. Amp repairs are generally not cost effective ($200-300+ plus 30-90 day warranty on the repair). If you have a service manual, volt/ohm meter and soldering equipment, then you might do the repair yourself. The parts likely cost less than $20.
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post #8 of 8 Old 04-29-2011, 11:43 AM
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"failing capacitor", still unacceptable. I've had many receivers through the years, stereo and surround, and this is the first one I've had with a failing capacitor.

Oh well, I try to stay positive. That fact that a 500 dollar receiver breaking after 2.5 years, though ridiculous, isn't the worst thing that can happen I guess.
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