i just opened the faceplate, and then tried to boot:
IT WORKED!!
so i decided to put it back on and again, still same problem,
ok then removed the faceplate again
..but still the same problem
..hm i it nearly sounds like the psp is trying to reboot all the time.
what hardware problem could cause that..maybe a short circuit somewhere?
and while the faceplate was removed, it had enough place not to touch, and so it could boot?..hm would it be a possible explanation?
what will happen if i´ll power on the psp not in its case, and without having the umd drive an wifi antenna connected, and the analog stick and the speakers? will something get defect or can i just try it with no risk?
does really no one know what to do_?