For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
Board came in with WiFi shorted and not booting.
Customer wants info, with WiFi removed I get 20V and USB activity but no image, trackpad clicks and caps lock fine.
No LCD connected and external monitor same problem, known good LCD same problem
Board had corrosion around C7700 yes I got 2 of this Macbook with same area corrosion.
My question for this one is simple, U7700 was shorted replaced it but R7702 lost it pads and a new one cannot be soldered without some extra wire work, will that resistor for the line SPMU_IREF keep the Mac...
Board had very very little corrosion around C7700 cleaned and replaced components from donor.
Port meter 5V ~0.045aA
PPBUS_AON - 12.3V
PP3v8_AON - 3.8V
PP5v_S2_MAIN - Pulses ~0v - ~1v
PP3v3_S2 - Pulsing
RC283 and RC282 heat up under thermal camera.
Clean board, came in with short in pp2v5nand but also has 2 dead ports UB300 and UB400.
Replaced UB300 and UB400 and UB700 and QB701 and also new UB090 reprogrammed with correct firmware.