How to unbrick a bricked PSP 1003 FAT.

Hi guys well basically my console broke down. After I uninstalled neurons LCFW 6.39-M5 it didnt restart after 6 second it just turned off and now my console doesnt want to turn on. Only the power button lights on for 2-3 sec, no screen, no nothing so i assume it is bricked. Now i need a way to unbrick it. I saw a couple of "companies" that claim to be able to repair it but I am sure there is a way I can do it myself, the problem is I dont have a second PSP which I heard is necessary to unbrock the first. If you have any guides whatsoever please post it.