Question about Denon DRA-685 Receiver

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My Denon DRA-685 stopped playing last night and "PROTECTION" displayed on the screen. It had been playing for about 2 hours so I thought maybe it was overheated. I turned it off. This morning, however, when I turn it on, I still only see "PROTECTION" and it doesn't do anything.

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 395 Answers

SOURCE: right channel not working

check the pre out /main in jumper there should be a loop jumper for both left and right. if you are using a graphic EQ check the wires connecting to the receiver and the EQ. also is this happening on all sources?

Posted on Feb 07, 2008

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SOURCE: connecting new tv to DRA-685

you can use the headphone jack just get an adaptor to change from the headphone type to RCA type. adjust the volume of the tv to 3/4 of the way to give line level to the stereo, use an aux input on the stereo. if you had a suround sound dolby digital / DTS receiver then use the digital coax out to that type of receiver, but since you have an anolog 2 channel receiver you must use the only anolog source (the headphone).

Posted on May 21, 2008

pgh_pa_guy
  • 2992 Answers

SOURCE: dra-685 the protection came on ,i found 2 speaker

You may have a speaker that is damaged and causing the protection to operate. Try unhooking all the speaker wiring from the receiver, turn the volume to minimum, and see if the protection still comes on. If the receiver is okay, you can start checking the speakers and wires to determine which one(s) may be responsible.

If the unit continues to go into protection even with no speakers connected, the trouble is inside the receiver. No protection circuit is absolutely perfect, so it's possible something failed before the circuit kicked in. Without the proper test equipment and service information, you won't be able to try fixing this yourself. Take the unit to a shop for an estimate.

Thanks for using Fixya! Hope your receiver's back in service soon.

Posted on Feb 02, 2010

  • 506 Answers

SOURCE: how do i hook up an ipod to a denon dra-685?

you can use a 1/8 inch female to stereo RCA adapter and plug the patch cable into one of your inputs like DVD or CD player. The signal to noise ratio on those inputs is pretty good.

Posted on Feb 11, 2010

dunnbiker
  • 8546 Answers

SOURCE: the protection mode want go

Generally speaking, an amp protects itself from heat, shorts and overloads 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 'naked'. 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 Feb 21, 2011

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1 Answer

How to take protect off a denon receaver


Hello. DC Protection is not something you can turn off. It is a protection system engaged by one of the microprocessors (computers) within your receiver. If any of the amplifiers are bad, and producing DC voltage at the output, the micro will immediately turn the unit off, to lesson further damage to the amplifier or speaker system. There can be other causes of why the unit's DC Protection relay is not engaging, but 90% of the issues, are related to amplifier damage.

Dave

Jun 15, 2012 | Denon DRA-685 Receiver

1 Answer

What can i do to be able to take my denon dra685 out of protection mode??????


I just recently picked up a Denon DRA-685 receiver that was stuck in protection mode. I found a site online that suggested it was due to two bad resistors on the main circuit board. More specifically resistor R-105 and R-106. They are both 1 ohm x 1 watt resistors. I ordered these from a supplier on Amazon for a few dollars, and just snipped the old resistors off, leaving the soldered leads sticking out. I then thinned the new leads and soldered them to the protruding wires, so I didn't have to remove everything. The unit now works like new. I'm happy I spent the time doing this, and grateful to the tech who discovered the common problem with this unit. Hope this can help somebody else. H

Nov 14, 2010 | Denon DRA-685 Receiver

1 Answer

My toddler pressed a bunch of buttons, and now it won't work, it flashes the word "Protection" on the digital screen.


Hello,

I advice you power off the device and power on after few minutes, if the screen still display the protection on the screen, power off and power on again, while your device is loading, pull out the plug from the AC socket and wait for some minutes before you plug and power on again, you can also check the manual of your device to see what the protection is about and how to fix it, the manual should shed and explain the information as regards this.

Take care.

Jul 11, 2010 | Denon DRA-685 Receiver

1 Answer

Protection circuit activated


Audio amplifiers IC's damaged need to be replaced

Apr 12, 2010 | Denon DRA-685 Receiver

1 Answer

How do i hook up an ipod to a denon dra-685?


you can use a 1/8 inch female to stereo RCA adapter and plug the patch cable into one of your inputs like DVD or CD player. The signal to noise ratio on those inputs is pretty good.

Feb 03, 2010 | Denon DRA-685 Receiver

1 Answer

Dra-685 the protection came on ,i found 2 speaker wires together,fixed that,but still stays on,thanks


You may have a speaker that is damaged and causing the protection to operate. Try unhooking all the speaker wiring from the receiver, turn the volume to minimum, and see if the protection still comes on. If the receiver is okay, you can start checking the speakers and wires to determine which one(s) may be responsible.

If the unit continues to go into protection even with no speakers connected, the trouble is inside the receiver. No protection circuit is absolutely perfect, so it's possible something failed before the circuit kicked in. Without the proper test equipment and service information, you won't be able to try fixing this yourself. Take the unit to a shop for an estimate.

Thanks for using Fixya! Hope your receiver's back in service soon.

Feb 02, 2010 | Denon DRA-685 Receiver

1 Answer

Reset danon receiver


You don't all you can do is unplug it for 5 mins

Jan 25, 2009 | Denon DRA-685 Receiver

1 Answer

Stuck in Protection Mode


"If you already solved this problem, Click here to tell us how you did it."

Funneeee....

1. You invite me to your site with a promise to fix my broken thing for free.
2. Next I find that its not free at all and that you really want money. No surprise there, really.
3. NOW I find that you are asking ME to provide YOU with the answer for.... FREE!

HAR! Clever business plan. Good luck with that.

Jan 04, 2009 | Denon DRA-685 Receiver

1 Answer

Denon DRA 685


Could it be that the speakers load is too much for the amp to handle? What are the ohm ratings? It should handle a low load but I am just wondering? How effcient are they?

Nov 29, 2007 | Denon DRA-685 Receiver

1 Answer

Protection error


your loudspeakers tweeters have shortcut *try them separetly)

 

Sep 08, 2007 | Denon DRA-685 Receiver

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