Samsung Galaxy SIII I9300 No power solution

MODEL:i9300
COLOR:WHITE
PROBLEM:NO POWER
HISTORY:BIGLA LANG DAW NAMATAY....


action taken..
palit ng battery...no luck..
try to charge the phone with new one battery.. na may karga.. ala parin..
try ko sa pc.. ayw din mag connect...
DISASSEMBLE THE PHONE..









TESTING..











TESTING..