Macbook air no backlight with no real history. Board has been cleaned with liquid indicators tripped.
There is an image on screen, just no backlight
BKLT_PWM (With Screen) - 1.47V
BKLT_PWM (Without Screen)- 2.6V (without screen)
BKLT_EN - 2.7V
Changed driver with no change. Also replaced r7704 and c7704 with no change.
Diode mode on BKLT_PWM - .526
Should I assume bad CPU/PCH on this...?
Thanks!
There is an image on screen, just no backlight
BKLT_PWM (With Screen) - 1.47V
BKLT_PWM (Without Screen)- 2.6V (without screen)
BKLT_EN - 2.7V
Changed driver with no change. Also replaced r7704 and c7704 with no change.
Diode mode on BKLT_PWM - .526
Should I assume bad CPU/PCH on this...?
Thanks!