820-00291 no life

[ThisIsWes:AASP]

No LEDs. I injected to the 12v line and checked with the thermal imager.
Q8450 gets warm. U6920 get hot though. No shorts to ground though.

I'm realizing I don't have any parts for this board though as it's 12v. Can anything from macbook be substituted for these?
If not, any way to confirm u6920 is the issue before ordering?

 

[2informaticos]

Injected into 12V why???
Did you detect short there?

12V_S0, or 12V_S5?

 

[ThisIsWes:AASP]

I didn't inject 12v, but I slowly injected to PP12v_ACDC as I do not have any power supply for this. Never made it over 2v. Received the board only.

Board had no first LED.

 

[2informaticos]

Q8470 is the first suspect there...

 

[ThisIsWes:AASP]

Can these be substituted from any macbook boards?

 

[2informaticos]

Compare specs and pins layout...