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.
History board begin by no green/orange light, find short on ppbus replace u7000 burned and Q7035, and replace smc because battery not charging, so now board green light/orange light and only error in picture.
noticed if i unplug battery indicator orange light present,
if i plug battery...
turns on with display without flat cable connected, J4700 and dc-in board looks very clean
noticed : if i unplug and replug flat cable board will start correctly and if i shutdown and restart, board black screen no shime
However dc-in board et cable work very good another laptop...
board no liquid damage if i unplug flat cable board startup correctly chime and display just slow and fan full speed (good dc board et flat cable know, real charger), how to proceded ?
sorry for your eyes ;)
so pin 2 of L6995 i've 124 Kohms sorry
removed L6995 inject 3.4V on pin 2 i've got 0.47 amps and smc heat (already replace same problèm)
noticed with magsafe plugged same problem smc heat
Board was little liquid damage U7100 area cleaning and replace corroded components,
Good charger know, PP3v42_G3H 2.9V and PPBUS_G3H 12.22V already check U7000 area
Noticed voltage on F6905 20V is not too high ? red area in picture heat
Board looks very clean no green light and orange light
PP3V42_G3H present
PPBUS_G3H 0V resistance to gnd 0,5 mohms
check U7000 area 17/18 27/28 fine
real charger 85w good know, tried magsafe board good know