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NAD T762 - no sound

My T762 just stopped producing sound from all speakers for all inputs including the tuner. Test mode which produces snow on all channels is producing sound in all speakers and working fine. Switch to any input on the receiver and I get nothing, no hum, no pop, absolutely no sound at all. Any Ideas?? I'm very interested in knowing if others have experienced issues with the T761 and/or T762. In surfing, I found a company on long island that refuses fixing T761 and T762 as they state they are flawed with many problems. Thanks for your help!

Posted by johncr on

  • Fippi Nov 17, 2007

    "Ditto" - same exact problem. I have not had the unit looked at yet. Do you have any further information?

    Phil

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1 Answer

Anonymous

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.

Posted on Feb 03, 2008

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NAD T-763 receiver. cannot get surround sound. all speakers work. should the 7.1 and or surround be connected to the receiver and what else. stereo works fine....two front speakers, in stereo mode. ...

Have you looked at the manual? There is no internal source that would produce 7.1 audio other than the test tones. Attach a multichannel source according to ITS manual.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/NAD-T763-Receivers-manual/id/8043bh646/t/2/

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All speakers work on sound level test but i have no music coming from rear, center and sub when playing 5.1 dvd. also i am unable to use any of the surrond sound modes. richard

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I have Nad T762 ( Amplifier Reciever )That Problem is "No sound" ..I Checked (Internal Amplifier Circuite is ok ).Now sir What can i do for Repairing this.One more Thing When i rise volume it rising only ...

if the power flows properly ,all fuses are okay in side the unit ? may be amplifier circuit is damaged .just remove all the wires of out put speakers,chk the speaker by connecting a normal battery cell 1.5 volt to spkr wires and feel the the sound ,if sound comes by connecting bateery cell, means speakers are okay,chk each pair of speaker wires of ur system,if any pair of wire of speaker has any cut of short connection it will nor let the sound come from any other as well.
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My home theater speakers make a constant hum whenever my receiver is on. The loudness of the hum changes with the volume control, and goes away entirely when the system is muted. All components are plugged...

jd40,
Sounds like a grounding issue. The first two places to look into is the powered subwoofer and antenna. During your last test, did you leave the FM antenna and subwoofer connected? Many times the hum is directly related to the antenna and/or the subwoofer and to how they are grounded; creating a ground loop through the receivers ground on the outlet. If the antenna is grounded to the dwellings wiring, hum is inevitable and sometime you can get a ground loop hum from how or how & where the subwoofer is grounded. Try taking them completely out of the loop.

Also try taking it further back to the basics, start with the receiver plugged into a known good grounded outlet with no surge or line conditioner in the loop and nothing connected to the receiver, nothing. Use one speaker and different wire to test each speaker output while in tuner and any other mode but phono. With no signal, you will either get nothing (no hum or static) or just static in the tuner mode. No hum is a good sign. Some systems will mute the speakers if no signal is connected to eliminate the static from being produced through the speakers but a ground loop hum will most likely still be produced even in mute. If you get a hum when nothing is connected to the receiver, try looking into getting a better grounded outlet, even maybe to a different dwelling.

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The harness connects the 5.1 low level signals to the board which are then redistributed to the amplifier section.     It is a bundle of wires in gray casing and with red, black and white wires (with shielding).

 

Find the offending wire, repair or replace and it should be fixed.

 

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