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Pin 3 is 8V, When I remove Q7706 it is still 8V. I replaced R7788, thinking it would fix the issue but it is still 8V. R7788 is 301K (Correct) and R7789 is 147K (Correct). Im thinking it is C7782 that is the issue.

Original traces are gone for R7731, however for R7715 just the ground pad is somewhat OK. Thank you I will run a wire and report back.

Ok, so should I run a wire from C7711 (3.3V) to BKL_EN (A3)? I cant fine any 2V source, and this was the closest source of 3.3V. EDIT: C7711 is PP3V3_S0

As the title says, this is a board that came in with liquid damage, upon cleaning both resistors came off the board, with little force, and the pads are gone too. I know I will have to run a wire to ball 3 of U7701, my question is how much voltage is on BKL_EN, and what could I leach off of to...

No short, Q7706 Voltages, all pins are 8.4V

F7700 is blown. Will replace and report back EDIT: However I can confirm it was not blown before, must have just happend.

Replaced LP8550 but still no backlight, PWM signal still at 1.3V (EDP_BKL_PWM) EDIT: LCDBKLT_BOOST is 0V

You were correct, not sure if it was corrosion but A5 ball was definitely not making contact, ball was almost gone. Ordered a LP8550, will report back with results. Sorry about quoting.

Oops sorry, I was reading these voltages when the display was unplugged, I get 3V on EDP_PANEL_PWR and still 0V on EDP_BKLT_EN. EDIT: 3V on both, replaced Q7707. Still no backlight. BKL_PWM is 1.4V, BKL_EN is 2.7V, BKL_ISET is 0V. PRAM reset does not fix the issue.

No signs of liquid damage on the board. All voltages on backlight circuit look normal but still no backlight. I have narrowed it down to it being EDP_BKLT_EN, and EDP_PANEL_PWR. Both of those are at 0V. EDP_PANEL_PWR pulses on start, goes to about 5V for half a second, then to 0V. EDP_BKLT_EN...

Without LCD connected Pin 1 - 220 K ohms Pin 2 - 60 Ohms With LCD connected Pin 1 - 220 K Ohms Pin 2 - 50 Ohms

820-3462 PPBUS_G3H - 12.6V when fuse is soldered and desoldered. Replaced with 3-4 fuses, keep blowing. No corrosion or liquid damage signs on the backlight circuit (Around Q9707) or around the LVDS connector. Any tips, I will be happy to report back voltages of other chips too.

I need some logic board repair advice, I am repairing an 820-00281 that showed no ssd (soldered to board), and I ended up finding what the problem was, some liquid got on C8784 and removed the PP1V8_SSD_FMC pad (pad 1). I looked up the capacitor in the schematic PDF file and it shares...