820-3437

[Rajnish]

820-3437 no display fan spin
PP1V2 ok
All_sys_pwrgd 3.3
bios is ok

 

[2informaticos]

We need more info here...

All voltages present, including CPU?
Any USB activity, checked with external mouse, or boot pendrive?
Pins 7 & 3 of U1950 have both 3V?

 

[Rajnish]

cpu 1.750 v
ram 1.2
vtt . .60
u1950 pin 7 - 3.3v pin 3 - 3.3
but usb have no activity

 

[2informaticos]

"bios is ok"
How do you know?

Fault history, liquid?

Check all SPI termination resistors and traces to U6100.

 

[Rajnish]

bios put another board
resistors and traces is ok
no liquid damage but
1 capacitor is rusty