crwdns2934241:0crwdne2934241:0 mark
crwdns2934249:0crwdne2934249:0:
Have just fixed an ipad with no backlight. After much work I tracked the fault to a short circuit capacitor on the logic board this held one of the gate inputs to a mosfet low and hence turned off the backlight driver circuit. I also have figured out most of the circuit for driving the LED backlight.
crwdns2915684:0crwdne2915684:0:
open