820-00840 stuck at 5.19V 1.42amp

hello i have a1708 no power water damage around areas u8400 u7650 f4800 j6100
all big coils has no short circuit except L8060 and L7900 their diode to ground is 0.0090
PPBUS_G3H .004v 0.396
PP3V3_G3H 2.2V

PP3V3_G3H_UPC_XA | PP3V3_G3H_UPC_XB 2.2v
PP3V3_UPC_XA_LDO | PP3V3_UPC_XB_LDO 3.3v
PP1V1_UPC_XA_LDO_BMC | PP1V1_UPC_XB_LDO_BMC 0.0v
PP1V8_UPC_XA_LDOD | PP1V8_UPC_XB_LDOD 1.8V

there is no water mark on the other side of the mother board where is cd3215
 

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"PP1V1_UPC_XA_LDO_BMC | PP1V1_UPC_XB_LDO_BMC 0.0v"
Only one appears at a time; depends where the charger is connected.

Compare diode mode readings on LDOs between both CD3215 chips.
3V3_G3H correct voltage is required, to get 20V at USB-C ports.
1.42A consume is very high for 5V input.
 
diode to ground | voltages

0.502 PP3V3_UPC_XA_LDO 3.3V
0.502 PP3V3_UPC_XB_LDO 3.3v
0.484 PP1V1_UPC_XA_LDO_BMC (0.0v charger connected)
0.484 PP1V1_UPC_XB_LDO_BMC (0.0v charger connected)
0.460 PP1V8_UPC_XA_LDOD 1.8V
0.460 PP1V8_UPC_XB_LDOD 1.8V
0.496 PP1V8_UPC_XA_LDOA 0V
0.494 PP1V8_UPC_XB_LDOA 1.79V
 
i didnt see any corroded caps on 3v3_g3h asside from pin no:2 on j6100
is it posible the u5000 is the fault? if yes is it changeable?
 
1.42A at 5V after injecting PP3V3_G3H
with r6999 current consuption is 0.600
without R6999 is 0.050 drops to 0.034
after performing this with or without R6999 PP3V3_G3H is 0.0V
 

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"1.42A at 5V after injecting PP3V3_G3H"
You've stated 1.42A on thread title; didn't mention about such voltage injection in first post.

Post again U6903 voltages.
 

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Remove C6990/1 (one by one) and check.
If still short, change U6990.
You may need to change R6906 and/or D6905 too.
 
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