Atoll pr5.1 please help

Hi all,

I returned from a business trip today to find my Atoll preamp seemingly not processing a digital signal. When the prepro is fed a digital signal it does not send any signal to the amp, like it is mute mode.

I tested the rca and digital cable from my CD player and the preamp would play the rca signal but not the digital. I since hooked up the same cables to an adcom processor and it processing the signal fine. Both 5.1 from my cable box and stereo from my CD player .

It appears there were storms when I was away, and the unit was turned off but still under power , as it has a 2 stage power on.

Any suggestions would be appreciated. I hope there is a reset/fuse for the processor, or a simple solution.

Thanks in advance ,
Gary