Is my logic board faulty?
Hello i open my mac to replace my failed HD.I accidentally scratched not very deep my logic board some inches upper of the video connector when I put the graphic card back.
I reassemble the computer with esd protection power it on and the screen has stable fat vertical lines on it I hear the scheme sound no apple logo and no further booting sequence.
Video connector mobo and gpu ok no scrathes i am not sure if any very little graphic card solder is crack or removed as it contacted with logic board.Diagnostic logic board LEDs all green working I cannot understand what is defect logic board or graphic card or both any help would be much appreciate.
Apple ask me 200 dollars just to check it so its not an option I will replace the faulting part myself.
Thanks in advance
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