Question about NAD Audio Players & Recorders

1 Answer

Nad 317 protection mode

My nad get's into protection mode and satays there all the time. from i press the on button til i take it off again, I opened it up and checked for anything burned. everything looks intact. i don't know what could do it.

Posted by on

  • henrik monsen Aug 01, 2013

    it does self protect even with no speakers attached. self protects when only the power supply is on

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • NAD Master
  • 5,113 Answers

Assuming the protection circuit is not faulty, I would look to the devices on the heatsink to the cause of the fault.

Posted on Aug 19, 2013

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 54 Answers

SOURCE: Nad 317 Amplifier No sound

Could be the speaker output relays. GOOD LUCK
BIGRED

Posted on Apr 02, 2008

  • 4234 Answers

SOURCE: Nad C370

Since the problem seems to be sensitive to the volume level, I would be looking at the output wave form for any DC current. Although the protection circuit should detect any DC present, it is possible that some is leaking through. Also, verify that the speaker impedence is correct. If the amp is seeing too low an impedence load, it will work too hard causing excessive heat which will shutdown the unit as well.

Keep me posted.
Dan

Posted on Nov 05, 2008

  • 1 Answer

SOURCE: Denon AVC-A1SE in protection mode

Hi,

After thorough cleaning of the speaker leads, PC Boards etc, I desoldered all the leads of the main two power transistors of the Left channel that had given problem earlier. Switched on the amp and bingo, it did not go in protection mode which confirmed that the two power transitors were the culprit. After checking the voltages and values of some other vital componenets vis-a-vis remaining left channels, it was confirmed that the circuitry was okay. The power transistors were checked again and found to be okay as well. I then took a chance and resoldered not only these two Left channel power trnasitors but also resoldered all the leads of all the other power transistors as well.

The amp was switched on again and this time also it did not go into protection mode. The amp is working fine. Problem could be either dry solder or short of power transistor leads by stray solder waste strand. There was no need to change any part which was great.

Thanks for help anyway.

HJ DALAL

Posted on Nov 30, 2008

petraman7
  • 1175 Answers

SOURCE: NAD C270 amp won't switch from red power/protection to green.

The AH may denote "slo-blo" style as opposed to Fast-acting
A fast-acting fuse will look like a single strand of wire ( maybe wiggly looking) ..A Slo-blo will have an element in it and a spring

Posted on Apr 11, 2009

  • 1 Answer

SOURCE: NAD 304 AMP...No Sound at all on both channels, Black marks on inner case.

i need a power amp. brand that has a 4ohms impedance that who will match my 307d2 4 ohms (pioneer) sub woofer that can use inside my house

Posted on Jan 13, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

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.

Jan 05, 2015 | NAD Audio Players & Recorders

2 Answers

Nad C350 2 channel Amp continually in protection mode


That could indeed be the issue, but you must check your speakers, wiring, and also the oupt stages for problems. Maybe the prtection circuits are actually doing their job. lol

Hope that helps...

Geno

Apr 02, 2008 | Audio Players & Recorders

1 Answer

Nad 317


Check for leaky output transistors change emitter resistors

Jul 29, 2013 | NAD Audio Players & Recorders

1 Answer

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


Hello
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.

Jan 23, 2012 | NAD M3 Master Series Integrated...

1 Answer

Protect mode can't use any buttons need the senquence in order to unlock the system


most sharp reset by pressing the power button to enter the power stand-by-mode while pressing down the volume down button ,press the power button un-til ALL CLEAR appears...hope this helps...yammandan

Aug 19, 2010 | Sharp CD-PC3500 CD Shelf System

1 Answer

The print is hardly visible and the ink cartrige is almost full


press menu then start mono then arrow up button 4 times.


machine will be in mainténance mode. press the arrow up button until 7 is displayed. press menu. press arrow up til 6 then press menu. press arrow up til 3 Dispaly shows powerp_all press start mono. machine runs a power purge. after that press arrorw up til 0 press menu press arrow up til 9 machine will print test sheet. In case you dont have a good result do the power purge again. If you dont get a good result after 3 times purging, the printhead is clogged and cant be fixed anymore!


to leave the maintenance mode press arrow up til 9 then menu then arrow up til 9.

Jul 19, 2010 | Dell 922 All-In-One InkJet Printer

2 Answers

I have an av316 NAD, surround sound Amp. Just got back from repair. The wires to the speaker may have been reversed when hooking, the amp went into protection mode, can I fix this problem. It wont come out...


Having the speaker wires hooked up backwords will not cause protect mode. If the wires were crossed (in other words shorted), that would. Disconnect all speaker wires, if the unit is still in protect mode, than the output transistors are probably shorted and the unit will again require service. Upon return from service, I would turn on the unit without speakers to insure that the unit at least works that far. Also, if you have an ohmmeter, measure across the speaker terminals. You should read either 3 or 6 ohms. If you read 0, the problem is a shorted speaker that then shorted the amp.

Keep us posted.
Dan

Jan 20, 2009 | Audio Players & Recorders

1 Answer

Nad C370


Since the problem seems to be sensitive to the volume level, I would be looking at the output wave form for any DC current. Although the protection circuit should detect any DC present, it is possible that some is leaking through. Also, verify that the speaker impedence is correct. If the amp is seeing too low an impedence load, it will work too hard causing excessive heat which will shutdown the unit as well.

Keep me posted.
Dan

Nov 04, 2008 | NAD C370 2-Channel Amplifier

1 Answer

Ink cartrige wont work


press menu then start mono then arrow up button 4 times.
machine will be in mainténance mode. press the arrow up button until 7 is displayed. press menu. press arrow up til 6 then press menu. press arrow up til 3 Dispaly shows powerp_all press start mono. machine runs a power purge. after that press arrorw up til 0 press menu press arrow up til 9 machine will print test sheet. In case you dont have a good result do the power purge again. If you dont get a good result after 3 times purging, the printhead is clogged and cant be fixed anymore!

to leave the maintenance mode press arrow up til 9 then menu then arrow up til 9.

Nov 05, 2007 | Brother DCP-110C All-In-One InkJet Printer

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

511 people viewed this question

Ask a Question

Usually answered in minutes!

Top NAD Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5113 Answers

The Knight
The Knight

Level 3 Expert

74185 Answers

Larry Stiles
Larry Stiles

Level 2 Expert

287 Answers

Are you a NAD Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...