Processor short-circuit. Hy! I need some components for NAD-T752 Surrand Receiver. The position is U 201and the part is ALI M6759(0232,tw10). It part is short-circuit. Could I buy one from you or where can I collect this part?

Sounds like display driver board {IC} has damaged. Contact any service technician. Electro help

It could be entering protect mode because it has no speakers wired to it, have you tried connecting to all 6 speaker - out connections. Often, if an amp can't detect a load on all 6 channels it won't work. Also, have you checked the thermal fuses? a blown fuse could cause this problem.

I hate to say this but the repair was not complete. If the sound levels are different with the balance in the middle, then either they missed a problem in one of the pre-amp stages, or they used an incorrect substitution for transistors in one or more stages. This unit should be brought back to complete the repair.

Any additional detail would require that I see the actual unit and poke around inside with test equipment.

Dan

It's logical since the headphones jack is connected at the main amplifier. Does your new main amp has headphones out?

It's sitting on a totally open cabinent with sufficient space around it.

I have had the front, left and right channels go out over time. I have fixed all of them, and each time it has turned out to be a cold solder joint. While I love NAD and will continue to purchase there equipment, this generation is plagued with poor workmanship.

To fix the channel going out, I removed the top cover. Back cover and 2nd card from the left (looking at the receiver from the back side). This card handles all of the audio processing. I have found cold solder joints all over this board which has caused channels to suddenly go quite. I have never found a bad component. Also, I have cleaned the interconnect to be backplane (board that the audio processing board connects to) in the case of the center channel going quite.

If you have poor FM reception, the first board from the left (looking at the receiver from the back side) may have a cold solder joint on the coaxial connection for the FM antenna.

The blue screen indicates a proper connection (signal received by the monitor). Try selecting "amp" on your HTR 2 remote then use any directional button at the center of the remote, the keys which circle the "Enter" button. Hopefully you will then see the menu appear. Use the same directional keys to navigate the menus.

has bad 12 volt regultor and 2 5.1 volt zener diodes on the main board in the regulator circuit, also may have a few caps near these parts which also need replacing. ref # for the 12 volt reg is u703 , kinda a major job.

make sure the trigger switch in the back did not get switched to trigger, if thats o.k. it may have 2 regulators 2 5.1 zener diode and a capacitor or 2 deffective on the board in the regulator circuit. I have yet to see any bad outputs in a Nad T752, but I have only worked on three so far. Larry James

has 2 zener diodes and a 12 volt regultor defective in the regulator circuit on the main board, may also have a cap or 2 near the 12 volt reg. ref# u703