Hello, I have a problem with this machine, the igts were shortened, in what would be the primary part of the coil has 4 “FGH60N60SMD”. The first part of the coil has about 18.8 mH, and the secondary part 3mH. The secondary igbts are “F60UP30DN” and they measure the 4 equal ones, they are not short. From the emitter of each igbts of the primary sector there are 2 resistors that bridge a diode, all smd, the resistances and the diodes are fine. They are the indicated values. In the relay output two resistors are connected in parallel, I do not distinguish the value since they are open and calcined, the resistors think the relay output, that is, it bridges the output contacts. I was reading the subject in several posts and I saw that the igbts are burned again, I would not risk because they are expensive. Any information you can give me? Thank you!!