Lexicon MC12 producing static noise only


I have this setup for years with no problem. MC12 with a Lexicon five channel amp. Now when I turn it on all I get is static noise(hum) only. It remains same when I change inputs. Absolutely no other sound. Any one experience this before? The reason I think it is processor not the amp is when I switch both of them off, the MC12 turns on few seconds later than the amp(because it takes few seconds for software load). The noise starts when the processor turns on.
girish