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.
If it is shorted, it would be smart to inject voltage just start low around 1 volt. Many many components on the C7592 side. If it's the PCH, it will be obvious.
Well now I have really done it !!!!
I took out ANOTHER working 00138 board from a completely working computer and mounted it in the clients computer just to be ready in time ... and ..... it is DEAD too !!!!
So now I have 3 dead boards 00138 and it is definately something in the clients computer that is killing them , this time I connected everything except the battery so the battery is excluded
from the suspects . Does any of you have some idea what it could be ????
I have to say that all pieces are working with the clients old board but it suddenly restarts from time to time and that was the reason I now have 3 dead boards all taking 17 miliampere and stone dead..
The things I reused are , the trackpad , the side board (the small board on the side ) the laudspeakers , and the fans .....
any ideas ....
None of them should cause such a fatal issue.
Did you test all boards on the desk, w/o any device connected?
Only need an USB mouse, connected to onboard port.
Check 3V3_S5/SUS.
Trigger SMC_ONOFF_L and check for reaction at PM_PWRBTN_L.
Be sure to use original 85W Magsafe 2 charger!