My Korg AC30 just went dead. I had been blowing the 6.3 amp fuse from time to time, where the lights would come on and all the tubes would light as well except the power tube section. This time I flip the switch and nothing...No lights, no lit tubes...I tried replacing each fuse, one-by-one, however not one looked blown....still nothing, no sign of life. I've also tried plugging it into different wall outlets where other amps are running from and no luck. BTW, this is a Korg era ac30 but I have had a lot of work done to it. It has been converted to 'original' JMI specs, MMagnetics OP tranny and choke and the Roger Allcock ef86 unit is attached as well. Any recommendations on what I should try next? Thanks!