lenovo g580 some time display some time no display

[skbasir]

LENOVO G580 (IG4858I) 20157 SERIES LAPTOP SOME TIME DISPLAY SOME TIME NO DISPLAY WITH RESTART

CHECK THE RAM ALSO NO RESULT SAME ISSUE

CHANGE WITH NEW I/O NUVOTON ALSO SAME ISSUE

REBAILING THE PCH ALSO GETTING SAME ISSUE

BUT WHEN TOP COVER FITTED DISPLAY NOT COMING AND RESTART ISSUE

I FOUND STRANGE ISSUE ON POWER ON /OFF PANEL

SO THAT BY PASS THE ON/OFF PANEL CABLE AND JUST CONNECT TWO WAIRE FROM SWITH TO MAIN BOARD AND NOW PROBLEM RESOLVE

NOW BOARD OK AND ALWAYS DISPLAY

[esmat-fadak]

too many works
good job sir jee