iPhone 8 plus has image but has no backlight.[br]
I have checked all 1.8v lines and all 5.7v lines which are present on the fpc. all backlight filters check out fine.[br]
I replaced all 3 backlight coils, both backlight driver ics. still no backlight.[br]
im getting very low voltage readings on both anode lines ( 3.7v ) . [br]
my anode readings taken from a good working board im getting around 10v on one anode line and around 16v on other anode line. with screen connected.[br]
[br]
However on this one both backlight anode lines measure (3.7v) on both anode lines with screen connected. [br]
anyone know what would cause both anode lines to be only pushing out 3.7v instead of the normal 10- 16v?
iPhone 8 plus has image but has no backlight.[br]
I have checked all 1.8v lines and all 5.7v lines which are present on the fpc. all backlight filters check out fine.[br]
I replaced all 3 backlight coils, both backlight driver ics. still no backlight.[br]
im getting very low voltage readings on both anode lines ( 3.7v ) . [br]
my anode readings taken from a good working board im getting around 10v on one anode line and around 16v on other anode line. with screen connected.[br]
[br]
However on this one both backlight anode lines measure (3.7v) on both anode lines with screen connected. [br]
anyone know what would cause both anode lines to be only pushing out 3.7v instead of the normal 10- 16v?