Question about Denon Audio Players & Recorders

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My dad has a Denon Al24 processing receiver. We have had the receiver about three years. The problems I have found so far are that the sub channel coming out of the receiver has continual hum that is louder than the music. Also it''s very very quiet. When we first got it half way was really loud, but know you have to crank it all the way and it's still really really quiet. peace, matt

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  • thetoadstick Nov 14, 2009

    Oh I checked with my own receiver and the sub works fine, but thanks for the post. Also I found the mute button on the romote and it doesn't do anything it says when it is on or off, but it doesn't change anything. Maybe the mute got stuck on in the wiring inside?

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  • Denon Master
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First check to see if the sub woofer itself is not defective.
There are components in the various associated circuits that are failing. I realize the receiver and sub woofer are not old, but this is very possible.
You will have to determine which of the units is defective, then you can call the manufacture to find out who their authorized service rep is.
From experience, I have seen electrolytic capacitors of various types cause these types of faults. The service work is time consuming, but can be achieved. The labor cost for the time involved to troubleshoot the unit will be more expensive than the parts themselves.

Jerry G.

Posted on Nov 14, 2009

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My denon reciever is stuck on mute.

Posted on May 04, 2010

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