a1706 820-00923-A. CPU hot No boot

[azemar]

hello I am asking for your help on an a1706 820-00923-A.
The CPU heats up
PPVCC_S0_CPU=1.07V
no change after 10s
voltage at charger 20V 0.6 to 0.89A varies

I did the tests with the motherboard outside the chassis

No trace of corrosion found either.

THANKS

[mon2]

What is the voltage to ground of PPBUS_G3H ?

[azemar]

PPBUS_G3H=13.22V

[mon2]

Remove all power. Measure the resistance to ground of each and every inductor for a review. If the resistance is too low, that power rail will not powere up due to the current sense resistor observing a larger than usual voltage drop = excessive current draw so shuts it down. You will need to review which rail is not powering up.

Study the power up sequence that is attached.

[azemar]

I just took the measurements and couldn't find any shorts.
PP5V_s0= 5.02v
pp3v3_s0=3.38v
pp1v8=s0=1.82v
PPVCC_S0_CPU=1.07v
PPVCCGT_S0_CPU=0V 1.7ohm

[azemar]

Hello
I think that the 19 svid sequence is not working, how can I test this part?

Svid=vidsclk ?

[azemar]

Does anyone have an idea where I can do other tests?