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.
I will post those when I get home.
Do CHGR_SGATE and CHGR_AGATE normally get shorted to ground so that the voltage dividers (R7085/R7086 and R7080/R7081)
can fully open Q7085 and Q7080?
PP3V42_G3H is good at 3.43 at the one wire circuit
PP_BUS_G3H: 0V
PPDCIN_S5_CHGR: 18.5V
CHGR_ACOK = 0 V
U7000
RES PINS 27-28: 20.3 Ohm
RES PINS 17-18: 3.2 Ohm
2: 17.42V
3: 4.32 V
10: 3.47 V
11:3.47 V
14: 0 V
19: 5.09 V
20: 4.93 V
R7010: 7.6 K which seems low but ACIN (PIN 3) seems good...
I have been practicing for a few hours every day on dead boards, removing and replacing QFNs
I had settled on a general procedure and I was looking for guidance
I am using a QUICK hot air station
1)I start at a high temp 600-615C at 3-4 inches from the board at high flow rate (100 on the...
"R7011: 330 Ohm"
Do you mean onboard value?
"C7011: 0 uF"
I was not thinking on its capacity...
Were you asking about short to ground or?
Sorry, new to this but I do appreciate your time.
After your response I usually spend time looking at the schematic to figure how and why to ask the same...
Very new to board repair
Green Light on charger
Decided to start with U7000
R7020: 0 VOLTS
PPDCIN_G3H: 18.5V
Q7080: SOURCE: 18.5V GATE: 17.88 DRAIN: 18.03
Q7085: SOURCE: 18.03V GATE: 17.23 DRAIN: 0V
R7085 actually sparked when I tested it
R7020: 0 VOLTS (PPBUS_G3H_DCINRUSH)
U7000...