thank you all guys very much. all of your advices is helpful . that scorch is For the sake of discharging cap. spark , my last multimeter was broken due to high voltage cap discharge and i discharged this 180u 450v one with a screwdriver instead of a lamp. and at last it seems i can't access...
hi , i have a power supply of epson eb-x41 projector that doesn't turn on . i haven't found the problem yet but in the power supply circuit it has 2 ics that i couldn't find any datasheet or just a little data about them, i think they should be switching ics but it's so strange for me why there...
