dario

Since I found schematic, I've done some measures on circuit. The supply circuit is made in this way: 230Vac -> transformer -> rectifier -> filter caps (Vcaps 110Vdc) -> switching...

Hi, I've got the same problem with ah500-7 head. 2SK3590 n-channel mosfets are shorted and when I tried to replace them, they blow up immediately. I suspect the cause is...