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Nad t761 loud hum then pop - Audio Players & Recorders

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Sounds like a short in either the power supply or one of the output devices. You will have to take it to a competent repair facility.

Posted on Feb 09, 2015

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Posted on Jan 02, 2017

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Who can repair my NAD T761 in the Newcastle upon Tyne area


Hello
Get into this link and find the authorised service center for Nad at your area.
www.yell.com/.../video+player+repairs-newcastle+u... - United Kingdom

Nov 20, 2011 | NAD T761 Receiver

1 Answer

Hi I have a NAD T761. It's around 5 years old. When I hear music it randomly shuts down with a loud click in the speakers. The green light begins to flashes. I wonder what is wrong?


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 '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.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

May 11, 2011 | NAD T761 Receiver

2 Answers

The left speaker channel on my NAD T761 receiver is very weak. I can hear music coming out, but very soft and cracking... Please help me out!


Try to swap the input connector, Hook up the right to left input and then the left to right input. If the symptoms is still there then you have a faulty output IC on the left channel. This is not DIY and I've advice you to send it to repair shop to isolate the problem. Hope that you have only a dry joints on that area.
Thanks for using fixya.

Jan 19, 2011 | NAD T761 Receiver

1 Answer

How can I reset my NAD T747 to factory defaults?


Restoring your T 747 to its factory defaults: At FM mode, press and hold front panel’s LISTENING MODE button until the VFD shows “Factory Reset”.

Cheers!

Feb 15, 2010 | NAD T761 Receiver

1 Answer

NAD S300 Amplifer humming


You have either got a bad earth connection, or possibily there's a capacitor failed.
If you can't find a dodgy conection, I would replace the large Electrolytic Capacitors in the power section, they are used to take out 50hz hum in the mains electric, when they go you get that hum coming into your system.

Nov 15, 2009 | NAD S300 Amplifier

1 Answer

Very loud hummimg and crackling - even when volume turned down.


There are a few variants for this model depending upon the serial number. From your description, there are some capacitors in between the amp stages called coupling caps that are failing. The hum is some DC current being passed through the output stage. The crackling is probably just dirty controls.

Dan

Aug 18, 2009 | NAD Audio Players & Recorders

1 Answer

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.
( judeshehan78@yahoo.com)

Thanking you

Your's Sincerely,
(T.C.A PEIRIS)

Apr 04, 2009 | NAD T761 Receiver

2 Answers

Loud humming on my tv and dvr with ny nad 761


The problem is the capacitor on the DSP board C107 2200mf / 16 Volts. Try replacing it and it should be fine

Oct 25, 2007 | NAD T761 Receiver

1 Answer

NAD T762 - no sound


Try reseating the prologic/output board. Second one from the right (from the front of the reciever), that fixed my no sound problems on many channels. You will have to take out a few screws to remove and reseat it, and while you are at it clean the connections.

Sep 08, 2007 | NAD T762 Receiver

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