820-01521-A No power 5 or 20v

[Extreme]

Hello, I am working on a Macbook air A1932 model that came with water damage around Q7660 which I already replaced.

Symptoms are if I plug in the board only without a battery I get 5V 0.01A if I plug in the battery, I get 20V 0.02A

I did the followings :
Measured PPBUS_G3H, PP3V3_G3H Are ok but PP5V_G3 is missing.
Check for short circuit which I cant find.
I tried DFU mode to revive or restore.
I checked the current on CD3215. They get 5V on CHGR_EN_MVR_R
Replaced the U7000
P5VG3S_EN I get nothing.
Replaced the audio board as it had some corrosion

It is still the same, not turning on at all.

Is there any hint that can help me to sort out this issue?

 

[2informaticos]

Check voltage and diode mode to ground on the 4 LDOs of both CD3215 chips.
Be aware, 1V1 LDO must only appear on the powered port.

 

[Extreme]

I checked all the voltages are ok.
The diode mode is around 0.500 on all

 

[2informaticos]

Do you get 1V1 LDO on both ports for sure?
DFU ended with error, or completed?

Post diode mode readings on J6100, at pins 32 & 33.

 

[Extreme]

I do get 1V1
J6100
Pin 32 0.713
Pin 33 0.395

I can't get to go into DFU. It was not even recognized when I connected the cable to the host Mac. I got a thunderbolt that can`t be used. I tried few different cables

 

[2informaticos]

Be sure to use dedicated DFU port.

Check AWAKE and SLPS2R voltages; the samll coils around U7800.
Also test without audio flex connected, nor battery.