A1706 820-00239a question mark and not charging

[Harryrepair]

Hello community,

i am troubleshooting this machine since 3 weeks.
It had a liquid damage.
What i did so far:

Changed pch and isl95828 (cpu controller)
Machine is turning on now and shows me question mark.
It does not charge the battery.

First i‘d like to work on ssd.

R9350 and the trace is ok
J9600 is ok

R9406 Input 5V - NO OUTPUT
R9401 Input 5V - 5V OUTPUT (should be 2.7V?)

I appreciate all help and hints!

Regards

[mon2]

Re: A1706 820-00239a question mark and not charging

Guessing that you have seen the following video since you mentioned R9350?

https://youtu.be/WbuRSUitwCw

[Harryrepair]

Re: A1706 820-00239a question mark and not charging

Yes, there are couple machines with problems at this probe point.
Mine is fine ppvin is passing to R9350

[piernov]

Re: A1706 820-00239a question mark and not charging

R9406 Input 5V - NO OUTPUT

Find out why it's missing then, broken resistor, broken trace, short to ground…

[Harryrepair]

Re: A1706 820-00239a question mark and not charging

Changed R9406 and R9401

Why is the output of R9406 5.1V although it should be 2.7V?

SSD_RESET_L is high? This signal comes straight from U0500,isnt it?

[Harryrepair]

Re: A1706 820-00239a question mark and not charging

Changed Resistors, did internet recovery and device is working good.
Merci pour votre aider