Question about NAD T753 Receiver

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NAD T753 5.1 Channels Receiver Problem

Unit keeps switching itself off every few minutes. Works fine when you switch it back on then it goes off again. All connections appear to be fine.

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  • Anonymous Oct 04, 2008

    i had same problem , they had to resolder power supply , connectors and board . ?

  • Anonymous Mar 29, 2014

    After static electric shock when I went to turn the volume up the listening selector switched over to tuner and no sound or light (on selector). I powered the unit down & unplugged the unit for a few minutes. I powered the unit back up and sound and selector light appeared, but it would not switch to any other source.

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  • 518 Answers

It could be a heat issue, is the receiver able to get air to cool itself? Also, a bad speaker or mismatched speaker may cause this. Sometimes hooking up extra speakers may cause this. Other than that, it would be a service issue.

Geno

Posted on Mar 05, 2008

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How do i eliminate amp protection. Unit goes no further. Tried to unplug the unit & plugged back in but problem persists. Please HELP!!!!!


This is a very ambiguous post. When you say that you are having this problem, what are you doing? Please post all the steps that lead to this error. There is no way to disable the amplifier protection circuit. If it senses a short (which could be a bad speaker) then it will be activated.

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A short has transpired before the fuse. Now in protect mode. See a tech.

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My Sony STR-DG920 shuts off then comes back on by itself every 4-5 minutes. It very quickly loses power then comes back online. Any ideas what might be the problem?


The problem is the Power Switch. The switch on the STRDGF920 is very problematic. When the receiver is on very lightly move around the power switch with your finger. do not use enough pressure to turn the unit off. Just very lightly slide your finger over the switch and you will see your problem happen. I have two STRDG920 units with the same problem. One is so sensitive I can blow on the switch and it will power cycle off and on. I have called Sony and they said they do not offer a replacement part power switch. I will have to figure something out.

Aug 08, 2011 | Sony STR-DG920 7.1 Channels Receiver

1 Answer

My NAD T743 will not switch on. I haven't used for a couple of months and it was working just fine before. Now I tried switching it on using both the power button on the amp itself and the remote, to no...


Hi, have you checked the power button in the back to see if it got pressed by accident? It's a round button located right under the speaker inputs in the back.

Apr 11, 2010 | NAD T743 Receiver

1 Answer

Is there a reset button for the NAD Surround Sound Receiver T 751


The only reset that i know of is to unplug it for 15 to 20 minutes. Hope this helps.

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3 Answers

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.

Apr 26, 2008 | NAD T752 Receiver

1 Answer

NAD CI 9120 (12 Channel)


Check all your cables, not likely but just in case.
Try removing all but two. Left and Right. Does it still happen,
If you can identify the speaker channel try swapping the speaker if possible.

It sounds like one of the speakers has an issue, could be a short in a cross over or speaker coil. If true the speaker is drawing too much current and causes the protect circuit to trip.

Depending on the quality either replace the blown speaker driver or purchase new ones.

If the speaker is not the issue it could be an issue with a power amp. Best to take it in for service.

Mar 19, 2008 | NAD C720BEE Receiver

1 Answer

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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.

Sep 08, 2007 | NAD T762 Receiver

2 Answers

Receiver wont turn on


It sounds like You have a Bad output Some where and its going in to protect mode disconnect spkrs and make sure volume is Down all the way and power up,Ck your wireing for Freyed wires and shorts at the inputs and outputs good Luck ttech

Jul 09, 2007 | NAD T752 Receiver

1 Answer

Receiver shuts down and will not turn back on untill you unplug and plug back in


Nope. sorry to burst your bubble but your problem is pretty common on this unit. Its bad capacitors in the power supply and probably not worth repairing in a repair shop. since this is a solid state reciver, there are no user replaceable parts inside.

Sep 24, 2006 | Harman Kardon AVR 235 Receiver

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