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dell inspiron 3421 no display

Posted: Fri May 11, 2018 10:00 am
by satish panchal
i have dell inspiron 3421 i3 laptop
board part no. is
12204-1
DNE40-CR MB
PWB:5J8Y4 REV:A00

no display problem
I have change bios ,io, even main chip but same problem
when i switch on board then main chip is heating ...