820-00239 Flashing folder ssd drive missing

[supamodz]

Hey guys working on a 820-00239 was water damage near the u9300, lets be clear its not an efi lock because i can boot up with an external drive. When i checked disk utility the drive is missing so we can move on. i ultrasonic that area but still no luck the main voltages going to that chip seems to be present no known shorts either any idea on this Duke.

 

[dukefawks]

Life boat jumper connector present in J9600?

 

[supamodz]

Yes it is there .

 

[dukefawks]

NAND getting power on R9430? PP3V3_S5_SSD present? Crap under U9300 is of course also very possible, check outputs on L9330/40

 

[supamodz]

Nand voltage at r9340 is 2.639V very close to 2.7 PP3V3_S5_SSD is 3.346V Crap was under u9300 L9330 is 1.230V L9340 1.822V

 

[dukefawks]

This is not looking good then. It is either still a half dead U9300 or the NAND got corrupted when liquid hit U9300

 

[supamodz]

I guess all i can do is order a u9300 from Louis replace it and keep my fingers crossed ill let you know the outcome.

 

[supamodz]

Hi duke replaced u9300 still flashing folder any ideas where to go from here.

 

[dukefawks]

The NAND probably got corrupted. Boot from external and see if Disk Utility is seeing something.

 

[supamodz]

it boots from external and disk utility sees only external drive

 

[larossmann]

This sadly sounds like a done case.

 

[supamodz]

Thanks for making my day so sad but i have a question i noticed on the schematic there is an ssd_reset_l is it possible there is a ssd command like the smc reset check out the schematic and tell me what you think