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My NAD M3 amplifier stops working abruptly.

My M3 stops working abruptly almost every time it’s turned on. The blue light starts blinking in amber and then the amplifier shuts itself off. Sometimes it happens as soon as I turn it on and sometimes after a few hours of normal playback, so I don't think it has nothing to do with temperature.

The owner manual says nothing about it and I have not been able to get an answer from NAD

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  • orb8 Dec 30, 2008

    Thank you very much.

    I don't have the amp in a ramp, it is on top of a table with plenty space for ventilation.

    Notwithstanding the M3 is coverd by NAD's warranty, I have not been able to have its dealer change or repair my unit.

    I left several messages in NAD's help center web page but with no real answer yet. I also had serios problems with NAD's M5 cd player, so I am starting to believe that NAD's Master Series lack the quaity one expects from such brand.

  • weirdal May 11, 2010

    Just from the sheer volume of questions on fixya regarding NAD components, they have serious reliability issues as you have found out. I'd suggest calling them and complaining because its harder to ignore a customer on the phone. Good luck.

  • weirdal May 11, 2010

    For starters, here is the owners manual.

    Look on page 10. The amber light means it switched to standby. If it had turned red, it would mean it was overheating (which it isn't). The amber light/standby was probably caused by either a bad solder joint or some component that will eventually fail completely and possibly damage other components. Unless you know how to look for bad capacitors and solder joints (just to name a few possible culprits), take it to a NAD dealer and have them fix it.

    Do you have the amp in a rack and does it get warm? An amp that gets too warm to touch will not last long.



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If NAD doesnt respond , find a decent amp/stereo tech in your area.
I can suggest some depending on where you are.

There's most likely a component failure that regular folks wont be able to fix

Posted on Dec 30, 2008


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