I have an NAD Phono Pre Amp and the right hand channel kept dropping out and eventually stopped working. So I sent it back for repair but they sent out a new one earlier this week.
I plugged this one in and it did exactly the same - worked for a few mins then right hand channel dropped out.
I know the amp and turntable are OK as I have a cheap Behringer one too and all worked fine with that.
So while I was fiddling with the NAD pre amp I unplugged it slightly - and it all started working again.
If it leave it a few mm out of the plug socket it all works fine! Why would that be? A problem with the house wiring (possibly earth), or just one of those random things.
