screen turns off when pressing mic area

i'm having a strange issue with my macbook pro, the screen seems to be having some kind of issue:

the screen will flash if the top of the lid is being tapped or if the bottom of the mac hits something (like placing the mac on a table without being super careful).

also if the corner near the microphone (top left) is lightly pressed (this area being near the display cable connector on the logic board). pressing hard on this area will result on the screen turning off and require the screen to be turned off (either by sleeping or rebooting) to turn on again.

apart from that screen works perfectly fine though, and moving the lid at any angle does not summon the issue, and only what stated before will summon the issue.

what could be causing the issue? i found this mac at ewaste and it was probably thrown in there, so a cable might have become loose. and maybe reseating the cable will fix the issue?

edit: i unplugged and plugged the display connector and the issue persists