wow... i wanted to swap screens between my psps cuz i thought i had one with broken screen. So ok i took em both out and switched... and . i took the bad screen (i thought it was bad) and put in my assembled psp and it works! and i put screen good screen and put in my dissasembled psp and guess what? it was messed up as the the in dissasembled. So both screen are messed up in dissasembled or old psp , but are ok in newer psp. And also i tried soldering the 5v point. and guess what! EXACTLY the same thing happened as in old psp(ms led is very bright). i have not soldered those 2 things together or scratched the tracer(or the thing that goes to MS led)