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.
Ppbus_g3h is 1v
Pp3v42 is 2.6v
All_sys_pwrgd=0v
I have removed u8150 no changes...
No corrosion on the motherboard
R7012 is fine and f7000 is okay...
What to do?
The Board draws 20v 0A with charger and battery connected ppbus_g3h=10.76...
With only battery connected ppbus_g3h =10.77
With only charger connected is draws 5v 0.02A and
Ppbus_g3h is 12.04V..
All other power rails are present and stable.
Have tried DFU restore and gives this error
GAVE UP...
This board chimes continuously with no display..
Did smc reset and pram and displays but still chimes continuously..
I have tested only with power button and screen connected no change and no corrosion on the board..
Should i try DFU?
Ppbus_g3h=13.3v
Pp3v3_g3h=3.3v
Pp3v0_g3h=3.0v
Pp5v_s5=5.1v
Pp3v3_s5=3.3v
Pp3v3_sus3.3v...
S4 rails are not present...diode mode to ground is 0.513
PM_SLP_S5_L is 0V