Originally Posted by
squirrel_41
Oh no its not just the zener all the igbt's are shot as well also 1 blown track ,I only had enough parts on hand to replace half the output so I replaced Q17,Q19,Q21 hoping I could continue to use the unit in one direction (I don't need both) while waiting for the part's ,however it does not work even if I select forward or revers I can only assume the switching is on different igbt's but then I could be wrong and have more problems.
I do have a full set of IRFP 460 Mosfets could I replace the igbt with these.
Cheer's thanks for the reply.