820 00045 only recognize 1.3GB On SSD

[Noguinfor]

Working on this board with liquid damage around q7155, u8902, q5510. q4700.

Needed to replace, q7155, u7100, r7104 and u8990.

This board working fine but can't boot to SSD!!

https://drive.google.com/file/d/10ChDky5zCeRrAASbXSCjbT-88qv7HWUK/view?usp=sharing

Suggestions ?? Thank you

 

[Noguinfor]

Forget the 1.33Gb part... is the online recovery... the disk are not listed in diskutil.

 

[Noguinfor]

any suggestion ??

 

[aprendiz]

Do 5 PRAM in a row and try again...

 

[Noguinfor]

Thank you for your reply Aprendiz But same history!! tried 5 times x5PRAM!!! after losing more than 3 days to repair this shit!!! I solve the problem, everything work's excepted SSD! =(

 

[smiba]

Honestly this is a board issue related to the SSD at U8801/10 or the controller at U8400. (Most likely controller).
From what I assume from your screenshot is that the controller is not being detected at all, which could be related to the controller itself but also due to broken internal traces (like PCIe) and resistors failing.

Voltages of:

PP1V1_S0SW_SSD?
PP1V8_S0SW_SSD_HOT?
PP1V8_S0SW_SSD_COLD?
PP1V2_S0SW_SSD_HOT?
PP1V2_S0SW_SSD_COLD?
PP2V5_S0SW_SSD?
PP3V3_S0SW_S1X
PP3V3_S0SW_SSD?


These boards are a pain in the ass to work with and if these voltages all are OK you might be in for a hard time

 

[aprendiz]

Is the battery working ok??

 

[Noguinfor]

Smiba Greetings!!! ty for your reply!! I already solve the problem!! the problem was on U8902!!! Pin 1 was not connect to the board because the liquid! only see under Scoope!! i was only have 0.345V on PP1V8_S0SW_SSD_HOT !! Resolder the component, now i have 1.78V and SSD work's Fine

Thank you aprendiz and smiba!!