So, i received the original transitors from Vibe. They were bery helpfull.
Now another Problem.
Renewed the Audio Section. Everything fine, amp plays music. But, when i switch the amp off, and in a short time on again, it blows a bank of fets in the output, also one IRS21844s is open. Happened two times now. Iam going to take out all fets aggain for recheck, but maybe somebody had this problem allready and know what to do?