820-00165 Red Light no Fan spin

[ppvout.s0]

Dear Administrator,

I have a board with minor liquid damange.
PPBUS_3GH is present.

F7140 = 8.6

U5110
Pin 1 = 3.42
Pin 2 = 0
Pin 3 = 3.42
Pin 4 = 2.8
Pin 5 = 3.3
Pin 6 = 3.4
Pin 7 = 3.42
Pin 8 = 3.3

Liquid damange I made some foto's looks like DDR Power supply chip is damange. But I dont get so far yet.

I can't find any short.

Hope to hear from you.

 

[2informaticos]

Clean the corrosion as best as possible.
Be sure about components and traces.

Do you get 3V3_S5/SUS?
Do you note pulse at any big coil?