I wasn't doing it until I had to replace the backlight chip (in a computer where there was already at least one module on the mother board, so there absolutely

I wasn't doing it until I had to replace the backlight chip (in a computer where there was already at least one module on the mother board, so there absolutely was room to put the backlight circuit on a module but I think Apple keeps it on the motherboard to save money which means lots of dead macs.) Also you only need 0.1%. The computer I worked on wasn't mine.