https://www.avforums.com/threads/denon-ud-m31-no-sound.1281148/

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Denon UD-M31 : No sound
 Thread startershockerty  Start dateJul 1, 2010



shockerty
Standard Member
Jul 1, 2010
#1
I have had my Denon UD-M31 for about 3 years now, and it has worked perfectly for everything I've needed. When it turns on, or the input is selected there is normally a second or so of delay then a click before it starts playing sound. A couple of weeks ago it didn't click when I changed the input, but turning it on and off seemed to fix it. Now it won't click at all no matter what I do and there's no sound. This is a very sad day. Anyone know whats up and/or how I could go about fixing it?
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BlueWizard
BlueWizard
Distinguished Member
Jul 1, 2010
#2
You can buy these on EBay for dirt cheap -

denon ud m31 items - Get great deals on Consumer Electronics, denon ud m30 items on eBay UK!

Perhaps it is time to think about upgrading to a more serious stereo system? I suspect a repair to this system is going to exceed the cost of replacing it.

Steve/bluewizard
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S Bibby
Active Member
Jul 4, 2010
#3
Hi Shock,

I have had my Denon UD-M31 for about 3 years now, and it has worked perfectly for everything I've needed. When it turns on, or the input is selected there is normally a second or so of delay then a click before it starts playing sound. A couple of weeks ago it didn't click when I changed the input, but turning it on and off seemed to fix it. Now it won't click at all no matter what I do and there's no sound.

Sorry to hear this - sounds like a dry contact but I wouldn't take any risks. A switch cleaner might help and if you can hear any crackling noises then I would recommend a quick dab here and there. Perhaps other Denon owners will have some suggestions?
Last edited: Jul 4, 2010
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Peter Adolfsson
Novice Member
Jan 4, 2020
#4
The speaker relay RL601 had a cracked joint solder round one of the pin (1 or 2) to the relay´s winding. Some discrete rectifier diodes had beginning cracks but this was not the problem with no sound from the speakers (sp_terminal). Ok?