820-02100 a2485 no power

DDVL

Member
Hi, hope you are having a good day. So this board is heavy liquid damage. Ppbus_aon was shorted due to ur760 and ug800 and ug400 was blown. And up800 ( i just removed it as waiting for more of them)
I took off ur760
Replaced ug400( donor board a2442 but not sure if its good) ug800.
So no boosting it goes to 5.32v and then 0.07 a and then will go to 0.21 amp and drop down again. Will repeat this cycle.
The other issue is the right type c port will only show voltage on way. If i flip it its just blank amp meter. I will add pictures.
 

DDVL

Member
The pictures
 

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2informaticos

Administrator
Staff member
Did you get UG400 from same position donor board?

Fo the right port, check diode mode on CC1/2 lines; compare with good board.

Remove F5200/1 and check C5250 voltage.
 

DDVL

Member
Yes exact postion from a2442 board. I read about the firmware thing. Yes i will do. Also so about the port not working one side what are the chances that the cd3217 chip i used is causing that.
 
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