I;ve got a Sharp KB6525ps that is dead. have 120 volts at filter board, all TCO's are closed. 120 volts to power board in back, no dispaly nothing. I received a manual, but it is not very clear, hoping someone has had some more experience with this one. I am guessing which I hate doing the power supply board, all the manual gives you is a wiring diagram no schematic. I have tested all the interlocks and they are good, not sure about power path, there is also a "switching power board". I am thinking this is to cycle power of magnatron as it has triacs mounted on it, but power goes between power supply board and it not sure which gets power first.
I don't speak chineese or korean so I'm a little lost hopefully one of you can help.