A2338 MACBOOK PRO NO POWER

[madjid911]

Hello, can you help me solve this problem: I have a macbook pro A2338 which does not start, motherboard 829-02773-A, no oxidation, the usbc is stuck at 5v it does not trigger the 20v, here are the measurements:

PPBUS_AON varied 11V70 12V5
PPVBUS_USBC1 5V
PP5V_S2_UPC 0V (1mégaohms)
PP3V3_UPC1_LD0 3V45
PP1V5_UPCA_LDO_CORE 1V5

PP3V3_S2 0V
PP1V8_AON 0V
PP3V8_AON 0V 1ohm short

I injected 2v I have 5a but I can't find any heating on the motherboard, I tried in several places of the short but still the same.

Do you have any idea please? Thank you.

[madjid911]

I isolated L5800 L5820 L5840 and LR502 / l503 I have the short on the pin 2 side of the coils, I put myself on C5892 but I have nothing heating on the motherboard yet I have 5A under 2v

[madjid911]

I removed U5700 I still have the short and even more amperage but no heating

[mon2]

Check the diode values.

Remove all power. Red meter probe to ground.

Black meter probe to the point under test.

[madjid911]

Hello, I just tested and compared, all the measurements in diode mode are exactly identical