I have a problem with my THP HL2-KFX. It blew a fet (MRF-150) in the left pa bank. Showed up as a "UB" fault....Unbalanced.... Replaced the fet and all other components check out fine. So now it gets up to 360w out and the UB Fault shuts it down. Has anyone else had this problem and if so did you manage to fix it?