Hello, I have some trouble with my Fusion 550. It used to work fine until yesterday but today I turned it on and the motorized pots are not working at all and also the power light does not flash anymore when the mute is engaged, the mute itself works though. Everything else seems to be working fine and it sounds just as good as always. It's one of the older models (~2009) so it is not under warranty anymore. I'll be most likely taking it to a tech but money's a little tight at the moment so I'm looking for clues on what the issue might be so I can save the tech some time. Anyone here maybe had this before and can point me in the right direction?