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RCD -M37 that displays V PROT and goes into standby mode when power switched on. Have checked the normal problems that cause this - as per owners manual - but no joy.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

dunnbiker
  • 8546 Answers

SOURCE: Denon RCD-M37 turns on when

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it '*****'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Posted on Aug 04, 2011

  • 323 Answers

SOURCE: Hello. I have a fairly

Try this: Press and hold the "tone" button for 5 seconds. This will reset the unit.

Posted on Apr 20, 2008

  • 1 Answer

SOURCE: goes into standby mode

press the off/on buttun and keep it pressed in while pressing the standby button... it should fix it

Posted on May 31, 2009

Bulldog AV
  • 52 Answers

SOURCE: after turning ON the power/standby switch, the

Is the red light flashing at first?
The unit may be going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps2_bing.gif metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers2_bing.gif are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

Posted on Nov 24, 2009

dunnbiker
  • 8546 Answers

SOURCE: what type of sub-woofer can

Free or you can tempt us with $$. Your choice.

Register and download the manual for free at audio.manualsonline.com

http://audio.manualsonline.com/manuals/mfg/denon/rcdm37.html

Self-powered would work but it would have to run on full-range amplifier (from the speaker posts) or Line Level signal (from the OUT RCA jacks) because this unit has no Sub-specific output. It's no bigge as the sub would naturally discard the higher frequencies via its own amp's and speaker

Posted on Feb 22, 2011

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I posted a question regarding a Denon RCD-M37 DAB, which after a repair to the sub power supply transformer, came up with VPROT after a few mins use. After very careful measurements I found that the -12Volt line coming from the power regulator board situated behind the mains transformer was measured at 10.5Volts. It is necessary to replace the LM7912 regulator. Whilst with this board out check soldering and all other components. Normal operation has now been restored. I hope this will help regards Paul R.

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Is the red light flashing at first?
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