15" Studio Display Backlight Problems

Hey everyone!

I got a "new" PowerMac G4 with an Apple 15" Studio display. Both are from 2001. G4 has no problem whatsoever. But the screen keeps flashing its power LED. The pattern is short short long. I checked the Apple Manual, which said that this Display has a backlight error. The error is that i can't adjust the brightness of it. Is there a way i can make it normal? I can't really send it back to Apple anymore:/