Technical Support A1398 820-00426 Need Help No backlight

user61596

isa198585
Registered

reputation_scoree

U7701 already changed to a new one, with LP8548B1SQ-04 37ACL6U 48b1-03 ( can your please chek it, caus on Schematic ist a model name of Backligth driver is LP8548B1SQ-03 353S4159) but I think it is compatibly, when not please let me know.
Q7706 ( mosfet) will be not open automaticly.
R7702 pin one get 12,42V
Q7706 pin 3 and 4 get automaticly 12,42, but I think is wrong, normaly it has to get lower voltage. I dont know why.
Q7706 was alredy changed.
J8300 looking fine, and LCD was already checked with a anothet Macnook
 

Attachments

  • s-l1600.png
    s-l1600.png
    1.4 MB · Views: 6
Who is viewing this thread?

There are currently 0 members watching this topic

Top