A1707 820-00281 question folder

[Djsp]

Hello I checked U9310 all the output voltages are 0V I only get 1.5V on PP3V3_SSD_LIM

 

[2informaticos]

Do you get correct voltages and signals on both sides of J9600?
Check continuity left/right.

What about SSD_PWRCON0 and SSD_PMIC_LDO (U9310).

 

[Djsp]

I solved it by replacing C9301, now I have a problem with the audio it does not emit sound, except that of charging, it does not emit the boot sound and the sound in general, the system detects the internal speakers

 

[2informaticos]

The machine detects the headphones?
Did you try another speakers?

Check RESET* signal of all audio amplifiers.

 

[Djsp]

Ok restored everything

 

[Djsp]

Now the image is disturbed in this way

 

[2informaticos]

Did you try known good screen?
What about external monitor?

 

[Djsp]

Tried with a new screen and it does the same, it looks like a logic board problem

 

[2informaticos]

Can you switch between iGPU and dGPU and see if image changes?

"What about external monitor?"
dGPU is enabled then.