Apple MacBook Pro / Model A2141 / 820-01700-A Board / 20v .08a-.80a /

Hello,

We have an Apple MacBook Pro model A2141 and Board number 820-01700-A that does not boot up, does not chime, fans do not spin. It Uses 20v and starts at .08a and goes up to .60a~.80a and drops to .0a before going back up.

What should we take a look at first?

Regards,
Zeydulla.

Be sure to use 96/140W charger.
Also test with charged battery.

We connected a 140w charger and placed the board in a completely working MacBook, it goes up 0.90a and restarts. customer did not mention anything about water damage.

What could be causing this issue?

Do you get voltage on any coil before restarts?

Also check U7800 LDOs, G3S and SSD voltages.

We have a working board and when testing it with USB tester the amps start at .06 but go up to .35~.40, The clients board stays at .06 and does not go up.

L7822 -> -0.027
L7821 -> -0.027
L7813 -> 1.80280
L7817 -> .90204
L7816 ->.90784
L7814 -> 1.10418
L7815 -> 1.10330
---------------------
PPBUS_G3H -> 12.6
---------------------
PP1V8_SSD -> 1.8
PP0V9_SSD1 -> .89993
PP2V5_NAND_SSD1 -> 2.5295

Is the machine recognized in DFU?