Macbook A2251 820-01949 Stuck at 20V

[Instafixx]

Device came in for Display Replacement.
Display was replaced and it was working well for 3-4 hours - whilst awaiting passcode from the client.
They kept giving the same password but it was wrong.
Went into recovery and tried "My Password will not work " option.
Unlocked the SSD with the same password and reset the pasword.

After assembling everything back device suddenly wont boot. No External Display as well.
Disconnected everything - still the same.
20V and stable at 0.049 Amps ( Will go up initially but will settle at this - without battery)

PP2v5_NAND_SSD0 Present
PP0v9_SSD0 is present
3v3_g3h present
ALL G3S lines present.


EDP_INT_AUX_N is not shorted.

Thermal Imaging - Nothing Gets hot.

Tried DFU Revive multiple times - it is always successful and ends with a Padlock sign.

PCH_PWRBTN_L is 3.3V and there is a drop in pulse when Power Button is pressed but PM_RSMRST_L is always high.

Data can be erased but i didnt do DFU restore yet.

One strange thing L7210/20/30 showing unusual diode to ground value - all are around .250.

 

[Instafixx]

Did a DFU Restore as well. Same ended succesfully with a Padlock sign

 

[2informaticos]

There must be a problem on Intel side.

Check for broken traces, damaged connectors, or ripped off components.

 

[Instafixx]

None Such Components found. Any other hint ?

Any particular rail i should check?

 

[Instafixx]

R7103 was missing. Schematics didnt say "No Stuff" and it looked like something was there before.
Installed it.
Now getting voltages at L7210/20/30.

Amp draw goes upto .700 -.800 (No Battery cconnected)

Fan Spins and Turns off at random.

No Chime -(Maybe because DFU restore was done and hence OS needs to be installed)

Get apple logo on external monitor but wont go any further (Maybe recovery OS dont show on external screen)

Nothing on internal LCD - tried 2 different units.