Hi Everyone,

My IGBT stopped functioning as well as the mosfet. It measures short circuit between Collector and Emitter. I replaced IGBT with vb921 dedicated coil driver. It made no difference. After a while the mosfet driver TC1427 stopped working and got really hot. I increased the value of the resistors at its input and output to 10 kOm. Installed the other TC1427 and after several firings of the coil it got really hot and stopped working. So I ordered more parts