Question about Denon Audio Players & Recorders

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After lightning strike, my denon ud-m5 displays "protected" when trying to play fm and doesn't work.

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Check the wire at the back of the FM Ant. If possible replaced it or relocate the FM wire.

Good luck

Posted on Jul 28, 2008

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Denon AVR-3801 lights up,makes rapid clicking noises when amp tries to turn on. Clicking stops but unit doesn't play & sometimes the unit turns off. Occurred after lightning storm. What to do to fix?


Probably damaged by power surge. If you do not have experience diagnosing and repairing electronic circuits as well as having access to schematic diagrams then this is not a repair for you. Failure to replace all damaged components may result in damaging new parts.

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Cd stuck in Denon CD auto changer receiver. Displays ERR. How can I get out?


As there may be other factors at play that require a more detailed explanation, I would suggest that you seek a resolution through a discussion with a qualified technician. To do this, refer to your operating manual, which should provide a telephone number for technical contact assistance. You can also go up to the manufacturer's website and make contact for advice. www.denon.com/

Mar 05, 2015 | Denon Audio Players & Recorders

1 Answer

The display reads "protect".so i


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 'nekkid'. 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.

Aug 19, 2011 | Denon AVR-900 Receiver

1 Answer

My Denon Audio precision am fm DRa 435R Reciever will not stay on station very long. After about 30 or sometimes 45 minutes it get off station. I have it set to a local FM Station, 97.9 and it plays good...


OK,this is a fairly common problem with digital tuners, I get them from time to time in my shop, you see, what is happening is the voltage that's used to tune the set, usual;y stays rock solid, your device however is drifting off station due to this voltage changing, usually it is in the powers supply or the actual tuner itself. It can be bad capacitors, bad IC's, bad transistors, bad tuner module. Sometimes it maybe a "Dry Joint" too.
The only fix is either a replacement PSU or Tuner or indeed maybe both? One simply cannot tell exactly without examining the unit.

You need to take this unit into a Denon repair center and ask for a "Quote" as to costings etc. Once appraised of that one can proceed from there?
Contact a Denon head or local office and ask them there, for a referral to an authorised service center.

Jul 18, 2011 | Audio Players & Recorders

1 Answer

I need to find the instruction manual for a Denon UD-M30 CD Tuner. Can you help please?


You can get the manual on the link below. Just click on where it says it is free.

http://safemanuals.com/user-guide-instructions-owner-manual/DENON/UD-M30-_E


Good Luck please rate 4 thumbs and please leave a testimonial

Oct 05, 2010 | Audio Players & Recorders

1 Answer

CD DRAWER DOESNT OPEN


Is there a small hole on the front of the load tray? If there is use a straightened out paperclip to push into the hole to remove the stuck cd. That might help you out.

Nov 19, 2009 | Denon Audio Players & Recorders

1 Answer

Receiver tuner out after lightning strike


you more than likely have a F.E.T.(Field Effect Transistor) front end tuner,very susceptable to lightning or static charge damage, chech your home owners insurance, you might be able to repair or replace the tuner but it wont be cheap

Sep 26, 2009 | Onkyo HTR500 Receiver

2 Answers

I did sound check and found not all speakers are working. The good news is that the protect mode has disappeared. Is it jast a matter of new speaker wire? This was caused by a lightening strike. Lost a lot...


One thing you can do is change the speakers around to the chanels that are working and check the speakers. If you had a lightning strike chances are that your amp was affected as well. This is just a quick check to see if your speakers are working.

I hope all is well.
Thanks
asnowman

Aug 21, 2009 | Sony STR-DE485 Receiver

1 Answer

Denon UD-M31. Circuit protect mode permanantly engaged.


Sounds like the output section is fried. See a repair guy.

Jun 02, 2008 | Denon Audio Players & Recorders

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