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!
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.
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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.
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!
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.
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.