No sound from NAP300 after move

Hello All

I have no sound from my system since I moved it from one room to another while the decorators are in.

My system is an Sony SACD/NDX source -> NAC282 -> Flatcap 2 -> NAP300 -> PMC 20.24 (I know the flatcap is a strange choice and it is soon to be replaced!)

If I turn the volume up high, I can hear a little sound if I put my head close to the speaker, so something is passing through the NAP300, but very very little.

I have swapped out the NAP300 for another spare amp I have to prove that the signal from the Flapcap to the 300 is good, and that the speakers are working, so I am sure that the 300 is the issue.

Given that the Amp itself is a dual mono, and I have the same issue on both channels, I am thinking it is more likely to be a power supply problem. The green logos do light, and I do get a thud from the speakers when I power off.

I have also read about faulty power buttons. I am turning on with a single hard push of the power on the NAP300PS.

So, I am quote lost!

Anyone any ideas?

Thanks in advance for your help!