why my psc's fuse blow off when i boot my pse i could not found and thing burned or blown off except the fuse , but to test it by eliminating the fuse and replaced with a copper wire .but after that nothing went wrong but psc did not boot but i found a resistor burned after that (May be before but could not notice) but a capacitor also does not show any continuity or even doesn't get charged (cap was working before the elimination of the fuse , i am sure because i discharged it my shorting it)