Ok this receiver is old. Its a NAD T763 AV Receiver. Receiver work 100% fine till I tried several attempt to do a firmware update which I found here on ecoustics.com
I spent an hour trying to get usb to rs-2323 cable driver to actually work with my laptop. Since on device manager there is a exclamation mark,but that has been resolved. Receiver and laptop is communicating.
Now for the messed up the part. I click on the T763 upgrade and followed the procedures.
There was an option for me to pick which COM and what model unit I had. I manually set the com port to 3 and before I even had the chance to pick my model. It automatically updated my firmware and I had to cancel. Now my receiver won't turn on. It just stays on standby.
This receiver is very old and there is no support. I know NAD Will charge me an arm and leg to fix this. Can anyone shed some light to troubleshooting this?
I don't know you're specific model but most NAD's have a reset feature. Contact NAD to inquire about this since the functions are slightly different for each model.