Hello everyone I have a problem with backlight I have already ruled out the CCFL lamps and the cable, which was tested I also changed the drive and still remains dark inverter is a T18I064 and has 5 input pin 5 = ground 4 = 3 Volt 3 = 3.3 volts 2 = 5 volts 1 = 0 volts ???????? if someone can tell between pin1 and pin 5 there must be eating? how to know which one? Thanks