Hi Silvio
I think that I m found problems , that is snuber , first I m use 1N4007 diode and 5.2 k resistor and all so 3x4.2 nF 1kV capacitor , but then diode is blow , after that I m add 3A 1000V diode and few sec is work fine , after that FET is blow , but before fet is blow I m have on...