MacBook Pro 13 a1502 no backlight, external display works
Hello everyone need some help please trying to learn but i can see i need more smarter people help , i hope it make sense try to do as much reading as i can i got Macbook PRO 13 inch A1502 820-3476-a Backligh is not on, LCD 100% good because was tested on different macbook , i done a lot of video research regards it and reading in different forum ,even in ifixit a member @oldturkey03 gave me a really good tips too but i stuck on pin 17 of u7700 edp_bklt_prs_en is 0v so i tried to use schematics and board view to my knowledge but i stuck at this pin 17 i dont have 3v u7700
pin 5 5.15v, c7740 pin 1 5.15v, r7744 5.15v.
pin 18 5.15v, c7741 pin 1 5.15v, r7745 5.15v
pin 17 0v r7742 pin 2 0v , r7742 pin 1 edp_bklt_prs_en 0v, c7742 missing looks like it never been there.
R7733 0 ohms
pin 8 3.32v, c8340 pin 1 3.32v, pin 7 edp_bklt_prs_en 0v
r8309 0v but when i measure in 200k oms on multi-meter i am getting 100k looks good
r8331 is missing like it never been there
r1430 edp_bklt_en says 100k i am getting 34.5k this is doesnt look good to me
pin 1 on j8300 ppvout_s0_lcdbklt 0v
can someone please help me i would really appreciate it