How do I fix the black screen?

I had dropped my PSP GO couple of months ago. Didn't want to bother repairing it at the time, but decided to do it now. Basically the problem was that the handheld itself would boot up, I would be able to navigate through the menu, but I won't see anything as the screen remains blank.

I have disassembled it following one of the guides on this site, to check if maybe there was a loose cable somewhere or something of the sort - didn't help(or I overlooked something). Then I assumed that the issue is with the screen itself and ordered a new one. After replacing the screen I had experienced the same problem. Therefore I most likely have 2 working psp screens atm. I had tried to check online for other solutions or explanations of the issue I'm having to no avail. I've seen some people with similar problem stating that their handheld is bricked, but I hardly believe that is possible in my case.

I would appreciate any help or information.