I dug up my old PSP 2000 and wanted to mod it but when I plug in the charger and try to turn it on, no display is shown. Although the screen is black, the power light turns green, backlight does turn on, and the start up jingle plays. I also am able to move throughout the menu and hear the noise so I thought the problem was the screen itself but when I bought and replaced the screen, there is still no display. I was wondering if I could get any help, thank you.