820-3115-B no power

Sr. Robot

Member
820-3115-B with no power no green light.

Corrosion around U700, replaced U700 now it was green light but no fan spin/

PPBUS_G3H is 3.4v, resistance to ground on diode mode is 0.400
 

Sr. Robot

Member
1: 9.8 mv
2: 0.0v (ground)
3: 0.0v
9: 0.0v
12: 0.0v
13: 0.0v
14: 0.0v
15: 0.0v
17: 0.0v
19: 0.0v
20: 29.2mv
27: 16mv
 

Sr. Robot

Member
So today the board didnt show green light.

PP3V42_G3H is 0v. There is no voltage comming in F6905, also theres no short to ground on F6905.

Replaced F6905 and replaced the charging port cable, still no voltage on F6905 (it has continuity).
 

2informaticos

Administrator
Staff member
"Pins 1 and 2: 0.0"
Do you mean shorted to ground?
If yes, remove C6905 and test again.
Also try another DCIN board.
 

Sr. Robot

Member
After replacing C6905 we have green light.

Now PPBUS_G3H is 3.4mv and short to ground on diode mode. C7000 is getting hot and the area around is getting warm so i dont know if one of the caps is shorted.
 

Sr. Robot

Member
PPBUS_G3H: 0.3 ohms

L7030: 0.3 ohms

L7630: 8.1 ohms

L7100: 8.2 ohms

L9701: 30.48 Kohms

L3895: 286.6 ohms

L7520: 2.3 ohms

L7510: 2.1 ohms

L7550: 1.0 ohms

L7330: 397.2 ohms

L7260: 17.01 kohms

L7220: 14.4 ohms
 
Top