A1707 820-00928 decapped PCH need data

[it-solve]

Seems serious overheating, all battery cells boughed up.

PCH decapped


Tried Apple Migration/data transfer kit and cant detect the SSD neither in Disk Utility nor on boot via the kit.

Short on the PP3V3_S5 side, but with removed lifeboat PP3V3_S5_POLARIS reads 0.75Vdc

All point on the SSD side on the lifeboat reads reasonable values apart than PCIE_CLK100M_SSD_LB_P and N, which are dead short.

R8600/1 doesnt show any burn signs.


This is a data recovery case. Any pointers?

 

[2informaticos]

"PCIE_CLK100M_SSD_LB_P and N, which are dead short"
Do you mean pure short (0 ohm), or just 50 ohm (as expected)?

Do you get all correct voltages on SSD with recovery tool connected (including page 78)?

 

[it-solve]

Appologies, you are right. Its 50Ohm for both.

I am missing PP3V3_S5_POLARIS when the kit is connected? Both with USBc and power adapter into it connected. Wouldn't this be fed from the data kit when lifeboat connector is removed?

PP1V8_SSD_DRAM = 0V

Shall I keep measuring the rest?

 

[2informaticos]

Recovery tool must delivers all power rails required by SSD; as should come from MLB.

PP1V8_SSD_DRAM is generated by U9310.