[SOLVED]820-3536 no pic no light no chime

[Glenn]

working on a 820-3536 card liquid damage.
liquid damages around pch area, u1900 area and i have replace keyboard connecter for missing pin 5 on it.

i have light on usb mous.
No pictures on external screen (using mini display port)
Have trayd PRAM reset with no luck
Have cleaned card in the UC

U6100 give 0V on pin 5-6
Ppvcomp_s0_cpu 0,009V

 

[dukefawks]

Vcore present on L7310? U1950 pin 8 checked?

 

[Glenn]

L7310 give 1.743V
U1950 pin 8 give 0V and showing 0,616 in diode mode

 

[Glenn]

Think i have a brooken trace between u4850 pin10 and c4850 pin1

 

[dukefawks]

and how would U4850 affect power on. Did you even look at the diagram and check what U1950 pin 8 is?

 

[Glenn]

Yes pin 8 on u1950 is pp3v42_g3h
and u4850 pin 10 is pp3v42_g3h

also missing pin 9 and 4 on u4850

 

[dukefawks]

So what voltage needs to be present on U1950 pin 8?

 

[Glenn]

pp3v42_g3h

working with fixing trace.

 

[Glenn]

now having this voltages on u1950

all pin except pin 4 have 3,3V

 

[Glenn]

please mark solved

Pram fixed it.