20 Most Recent NAD T752 Receiver Questions & Answers

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Receiver wont turn on

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
10/21/2022 10:26:13 AM • NAD T752... • Answered on Oct 21, 2022
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NAD T752 Hi, When powering up,

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.
12/15/2021 10:40:07 AM • NAD T752... • Answered on Dec 15, 2021
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Powers on in standby mode

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
7/5/2011 10:17:16 AM • NAD T752... • Answered on Jul 05, 2011
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Hi there .. i have

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
8/8/2010 12:46:48 PM • NAD T752... • Answered on Aug 08, 2010
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Short Pin/Headphone jack issue with NAD CBE 720 Receiver

It's logical since the headphones jack is connected at the main amplifier. Does your new main amp has headphones out?
2/20/2010 3:08:47 PM • NAD T752... • Answered on Feb 20, 2010
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Processor short-circuit.

I just crossed referenced that part, and the sofware couldn't find it. You need to find out what manucturer it is, then go to that web site and order it. How many pins does it have? Is it a sip, or a dip chip? sip stands up with pins at the bottom., dip lays flat with pins on both sides. You may have to order that from the product manufcturer.
7/1/2009 8:37:02 AM • NAD T752... • Answered on Jul 01, 2009
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Right Channel Not Working

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.
4/5/2009 12:55:35 PM • NAD T752... • Answered on Apr 05, 2009
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NAD T752

Be the first to answer 3/4/2009 5:54:09 PM • NAD T752... • Posted on Mar 04, 2009Be the first to answer
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