NAD T762 - no sound

system must be on surround sound or three speaker.

The selector chip is not working, either there is no B+ to the ic or the chip has malfunctioned or one of the surrounding components dead, for this type of problem a schematic will be needed to track the problem. try www.nad.com contact customer support and the technical department for additional help.

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/

What cable did you hook up your dvd? The 5.1 sound works only with optical cable or HDMI. Check in the input settings wich one is selected. With the analog cable ( Stereo RCA) is not working. Good luck!

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.

make sure ur inputs are hooked up to the unit and outputs are hooked up to the tuner

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.

-Chris

Let's figure out which hardware is failing. Connect the phono preamp to the CD or tuner input to see if it works there. It should. If it does, your receiver is at fault. Did the front panel controls get damaged?

How did the turntable fare in this accident? As a basic test of its ability to produce sound, hook it directly to the CD input and raise the volume slowly while playing an LP. If it's alive you'll hear a very weak, tinny sound, but I assume you know that or you wouldn't have a phono preamp in the first place and would probably be asking why the TT sounds so poor. :-)

I had the same problem with the right channel.    It turned out to be a broken wire inside the receiver; it can be found connecting from the main PCB to the card for the 5.1 board.    After repairing the broken wire, it has worked fine.   

 

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.

 

Hope this helps

Use the remote and switch it to be in the sub mode (top right corner of remote) It is here (in the sub mode) that you can change volume and inputs.