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NAD AV-716 receiver

A PROTECT message displays when I try to use this receiver and locks out the ability to use it. How do I get rid of that message, I am not a technical person. Thanks hope you can solve this, the usere manual does not address this message. NAD AV-716 Receiver

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  • zofonz Dec 28, 2007

    I have the same problem, have you any results

  • Anghellz Jan 05, 2008

    I'm having the same problem on my STR-DG510 . I'd love it if someone could help me out with this. I miss my receiver!

  • MOONDEAR Jan 06, 2008


  • juplc Feb 15, 2008

    My Denon AV-1010 displays "Protection!!!" and won't work. I'm not sure it's worth $40 to have someone diagnose it. My research indicates it could be a crossed speaker connection. If not (mine wasn't) it's probably an internal problem.

    My solution was to buy a used NAD AV-716. But it didn't have a manual. If yours is dead, I'd love to have your manual (or get a copy of it)

    Good Luck

  • vena leong Mar 12, 2008

    the situation of my receiver now is only the lights of the "Power" and "M R OFF"are on. when i try to turn on the receiver, there is no response with all the buttons. I try to unplug the electricity and plug again, the same situation happens, only the lights of "Power" and "M R OFF"are on. and i also check the rear side and nothing has been removed and loosen, so i don't what's happen with my receiver. I also use my remote control, again no response. (NAD AV-716 receiver problem)



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Dos any one know wich the end transistors i have to use. There are 6 pieces from these on the NAD AV 716.

Posted on Apr 22, 2010

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I had this same problem.... twice. The system protects itself form frying because you have crossed wires while the system is on.

Prevent this by: Never touching or messing with wires when your system is on. Always unplug before messing with them.

Also, trial and error - locate the bad cable. Never use old beat up cables, use clean ones without breaks or sufficiently fixed with electrical tape.

Solution: I had to send my unit back to Sony. They were nice enough to take it off of protection and send it back (both times). It took a little less than three weeks for me to get my unit back (not too bad all things considered).

Hope this helps, it was a nightmare til i figured it out. Very frustrating especially with a new unit

Do not throw away! Unit should be still good.

Posted on Apr 26, 2008

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Just called Sony and they were very helpful.   It is either an issue with having a surge protector or a speaker connection.  I plugged my receiver into wall without protector with no change.  Once i removed all of my speaker connections to receiver, the problem went away.  Upon reconnecitong speakers i noticed that my center speaker wires were touching and shorting out connection.  Once i fixed this everything was hunkey dorey.

Posted on Jan 26, 2008

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I just tried turning off selective tone and it is now working.

Posted on Dec 28, 2007

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1 Answer

Nad av 716 protect

If your NAD amplifier is in protect mode with no speakers connected, it will be necessary to open it up and check for internal component failure.

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My NAD T747 keeps shutting down in Protection Mode at 6db when it used to go much louder. I cleaned the unit. Still nothing.

Modern AV receivers such as your NAD have protection circuits to prevent damage when there is a short on the speaker terminals. Look carefully at the speaker connections on the back of the AV receiver- for example, the speaker cable for front left speakers labelled + and - : there should not be any stray strands of wire that connect from + to - ; this would be a short circuit. Check each of the connections on the AV receiver as well as on the back of each of your Speakers themselves. Also ensure all connections are snug (do not use pliers). If this does not solve your problem, you may need to take your AV receiver on for a service checkup. Good luck !

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Hi, try powering up the unit with out any speaker connected if it still goes to PROTECT try factory reset if possible.
To reset the AV receiver to its factory defaults, turn it on and, while holding down VCR/DVR, press ON/STANDBY. "Clear" will appear on the display and the AV receiver will enter standby mode.
If this does not fix your problem you should take your unit to service . :)

Dec 12, 2012 | Onkyo Audio Players & Recorders

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How to troubleshoot nad 716 power always off

how to troubleshoot nad 716 power always off

• need to open the unit

• get a multimeter and measure the DC voltages present on

each of the amplifier output stage.

• it should be no more than 0.7 V, if it s, remove those pair of power

transistors and test again for output voltages.

the negative probe

of the multimeter to the chassis of the unit.

• if the shuts down problem goes out,

assume one of the extracted pair is bad.

you can test it individually since it is already outside the circuit.

Let me know how you make out with the inspection.

It is a good chance you will find something.

hope this helps, thanks for using Fixya!

Aug 05, 2012 | NAD Audio Players & Recorders

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NAD M3 power light turns red immediately and PROTECT message displays. Amp keeps functioning but volume control doesn't work up or down.

Check the connection to speaker with this amp, for any short or any other fault. disconnect the outputs, ie, speakers from the amp, and switch it On, and see the protect display comes or not. If it comes, the fault is internal and the set need service.
Your M3 dual Mono integrated amp, is of high output power and its outputs are protected against any overload or short circuit. If the system detect any among this condition specified above, it will show protect mode display.
Never load this amp, as protection display is there, as it may damage the speaker or its internal power amplifier section circuits, may cause more money to get it repaired. OK.

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Denon AV Receiver Model AVR3600 locked at'' Protection '' mode

The power supply is damaged and needs to be serviced. You have done exactly what you should have to test for an outside issue, it's the receiver.

Nov 02, 2009 | Audio Players & Recorders

1 Answer

Unit worked flawlessly 1 hour ago

Hi Ernietex,

Dont blame your wife.

Your receiver is basically going into protect mode.

The Denon AVRs contains a microcomputer for signal processing and control functions. In an unlikely event, it may cause it to lock up. Unplug the power cord from the wall outlet, wait for 10 to15 seconds and then plug it back again.

But, before you do than, please also check your speaker cabling again. Make sure that all of them are seated properly, none is touching each other or the body of receiver. Take out all the wire and put them back again if necessary..
Some times even a little tiny frayed wire touching the receiver could trigger the protect mode. Be careful, since protect mode is sometimes not fast enough and it could blown a few trasistors in the power circuit.
Just check your speaker as well....whether they play all right thru another receiver or amplifier. its posiible they might be shorting inside. A little frayed wire could also trigger the protect circuit in your receiver.
I hope this should solve your problem.

If you still can’t resolve the issue yourself, try resetting the AV receiver/AV amplifier before going on to opening the Receiver.

Hope you can sort out your problem with the above trouble shooting. Let me know if I can guide you further.
Best of luck. Thanks for using FixYa!

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NAD AV-716 Surround sound reciever, i need any info about it.

Dear sir

i would like to inform you that I mail you a letter by post and you will received it within two weeks time.
Regarding NAD AV- 716 details and spare part requirement and also i would like to remind you that my second letter stated all requirements etc.dated 8th march 2013. Please refer to the given below Email address.

Thanking you

Your's Sincerely,

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The output section is probably in protect mode because a problem was deteceted internally. Please update this with the specific model and I'll try to provide details. Please note that there are variants for a number of NAD receivers based upon the serial number. Please post the serial number as well.

Mar 25, 2008 | Audio Players & Recorders

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