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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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.


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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3 Answers

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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.

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1 Answer

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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.

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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.

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2 Answers

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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

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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.

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