NAD C326Bee goes into standby although an active signal is present. Any idea?

Hi there,

a couple of months ago, I reported that I could re-animate my NAD C326Bee from turning on and forcing a specific input to be chosen.

Since then, the amp was working perfectly, but then since yesterday, a weird behaviour occurs:
* The amp is working with a valid input signal, and is set up to have the auto standby function in absence of signal. Roughly after 1 hour, it goes into standby (real standby, amber LED. Not protection with red LED). I managed to reproduce it with different inputs.
*When I de-activate the auto standby function, I could not reproduce the problem.

In other words, it seems that the auto standby function is corrupted, and is triggered erratically when it should not.

Did anyone have already such a issue? And if so, what would be the solution?

Cheers.
 
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Simple solution is to Not use the Auto function.

Failing that, do you have a multi-meter, soldering iron, and other such tools to be able to open and work on this machine ?
You will also need to find and supply a schematic for this unit.

If not, then your left with taking it to a repair shop.
 
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Yeah, the simple solution is what I am trying now (and in the hope that it would not occur again), yet I like the auto standby function.

I do have all the schematics and the soldering/multimeter tools. I used them to solve the issue of forced turning on mentioned above.
The schematics/service manual is to be found here: https://audiocircuit.dk/downloads/nad/NAD-C326BEE-int-sm.pdf

Yet, I ma at loss where to start for the specific issue of the standby erratically triggered, hence the question whether someone know of this issue and how it may have been solved.

Local repait shops are not keen on repairing the nad if this may be IC related (which I am afraid of), and I have rather bad experience , let alone outrageous prices with the official NAD repair shop.