820-00426 , ppbus_g3h 3.86v

[nelo1012]

820-00426 , ppbus_g3h 3.86

resistance to ground on ppbus_g3h started at 18 kohms and dropping
diode mode 0.65, NO GREEN LIGHT


U7000 PIN
1 3.4V
5 0.72V
4 0.78V

U7100

PIN 5 3.41V PP3V4S_G3H
PIN 4 3.3V
PIN 1 &2 3.26V (SMC_BC_ACOK)

any ideas

 

[2informaticos]

Looks like SMC doesn't work.
First be sure R7029 is OK.

Post some voltages for U7100; pins 1, 2, 3, 9, 12, 13, 15, 19, 20, 26, 27.
Also check U5110 voltages.

 

[JohnB8812]

Resistance between pins 17/18 and 27/28 of the ISL6259?