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I have a A1708 820-00840-A with no power.
It puls 20V from ampmeter but 0A (only board on desk).
PPBUS_G3H = 0V and seams to be shorted. It has 0.002 on diode reading and 0.4 ohm in resistance to ground.
R7020 = 20V
F7000 = 0V and 0.002 on diode reading. After lifting F7000, PPBUS_G3H...
I have an A1990 820-01814-01 with no boot.
It powers on, I have 19.5V on ampmeter, and it goes to 2.88A with battery, and with out i get 19.6v and it goes to 0.30A then down to 0.A
Already tried revive and restore DFU with no error but no sucess.
It has fan spin, i get 5v from USB...
820-01041 backlight problem when i look at board i see water damage around j4800 and cb211 cc773 cc772 i change them from other board
the board boot up everything works but when i close lid and open the backlight does not come on i see image key board lights up but not touch bar and screen
with battery i get 19.5v and 3.55a with out battery i get 19.5v no A no fan spin
PPBUS_G3H is 12v
PP3v3_sus: 3.3
PP3v3_G3H: 3.4
PP5V_S0: 0v
L7900: 0v 143.3 Oms
L8410: 0.2v 3.635Mil Oms
L7960: 0v 34. Oms
L8000: 0v 95 Oms
I have an A1989 820-00850-A with no power.
as soon as i plug in the cable to the other mac is says DFU and when i try to restore i get era see photo
It has only 5V on ampmeter.
does not turn on!
5.10V/ 0.240A
PPBUS_G3H=12,3V
PP3V3_G3H=3.24V
U3100:
PP3V3_UPC_XA_LDO = 3.287V
PP1V8_UPC_XA_LDOA...
i have a 820-01041-A i see no sign's of water damage i get 19.5v 3.27A from charger with battery connected
with no battery i get 19.6v 0.02A
when i connect it to another mac i can get in to DFU AND DO A RECOVER IT BOOT TO APPLE LOGO THEN THE FOLDER ICON WHEN I TURN IT OFF IT WOULD
NOT BOOT...
this came in with water damage around j5260 i get 5.14v 0.02mA
PPDCIN_G3H = 5v
PPBUS_G3H = 0v - not shorted
PP3V3_G3H = 0v - looks like shorted
should i give a little voltage and check with thermal camera
820-02016 the A and D are the only keys that don't work the mouse had water damage .
I change mouse and mouse cable and new keyboard same problem i even change the mouse darter board still no A or D keys
820-00239 no camera the screen was change may have put screen from 2018 or 19 before i got it and put wright screen but no camera
screen was tested with other board and camera works
all USB-C ports have the same behavior? tried DFU it reads starts restore when it gets to last step it hangs and give message time out
i found a short on ppvddcpu_awake
I have an 820-00165-A no power. I have orange light on charger but no fan spin, had water damage
PPBUS_G3H = 8.59V
PP3V42_G3H = 3.4V
SMC_RESET_L = 3.3V
pp5v_s5 = 5v
pp3v3_s5 3.3v
smc_on off_l 3.4v
pm_pwrbtn_l3.4v
pp5v_s4rs3 0v