My theatre purchased 3 of these fixtures last year. We had them running for a while and then they began blowing fuses. We solved that issue and now the next problem is that they are giving erroneous DMX address on the LED display when i hit the up and down arrows the numbers change to letters and are never in any specific order. I have tried everything I can think of and I have searched the internet high and low for similar problems and come up with nada. The weird thing is that everything else in the display menu works. The even weirder thing is that all 3 that i have do the same thing. We are running them on R20 Dimmer Packs switched to non-dim.