MacBook Pro A1398 screen flickering

[UrsusM]

Hi, i have a MacBook Pro 15" A1398 and after bit of water damage the screen
is every time all 3 seconds jumping. i try other Display on MacBook and
that was 100% working. the fault must be behind the black plastic. i hope
you can help me ;-)
thx

 

[maflynn]

Its probably a short in the circuity, possibly the logic board. If you spilled water on the laptop and now its having issues, chances are good the logic board is failing.

 

[UrsusM]

it´s 100% not the Logicboard!! the foult is behind the black plastic. but i can not see what it is