20 Most Recent NAD T763 Receiver - Page 7 Questions & Answers

check for corrosion or dirt around the screws that hold that board in place. the screws provide ground at several different places on the pcb that are not otherwise connected. good luck

how old is the amp? if over 20 it probably needs new capacitors, if it is newer, and hasn't been abused, you will need to adjust the slew rate and damping, if you don't know what these are, i'd take it to a shop to have it done and tested. if you do and have an oscilloscope the little pots are near the biasing resistors in the output stage. good luck, with a little work these are great amps.

Yes because HDMI 1 is the only hdmi port on your TV that has ARC. I Believe if you turn down the resolution (the quality of the picture) in the settings on your DVD player it will work on the other hdmi ports. This of course is probably the last thing you want to do. That's technology for you.

Check for leaky output transistors change emitter resistors

Check the output for short

It could be caused by a variety of things from leaky capacitors both in the power supply or in the audio signal path, to a resistor or transistor becoming intermittant. See if temperature change has any effect. If there is a change this could help you pinpoint the area where thr trouble lies. If you are using a hair drier be careful of creating too much heat. That could kill it altogether.