A1706 SSD Issue

[Instafixx]

PP3v3_g3h was shorted. Injected voltage and remove the cap.

Now its flashing the question mark folder.
R9350 and adjacent are okay. Checked every other thing in repair.wiki.

How can I ensure dead NAND?

 

[2informaticos]

J9600 metal plate is in place?
Check continuity left/right for all its lines.

 

[Instafixx]

Continuity Left/Right Means
Resistance across pins on left and right lines. 45/46.

45/46 is 7.4M Ohms
43/44 is 6M Ohms
1/2 is 400k Ohms
4/5 is 1.7M OHms
7/8 is 100 k Ohms

 

[2informaticos]

It means to check over the connector, between the same lines.
You should get readings close to 0 ohm; if top plate is mounted, of course.

 

[Instafixx]

I am still unable to understand.Please guide me

 

[Instafixx]

I get 13V at PPVIN_2V7NAND_LB is that ok?

 

[2informaticos]

That means you have good contact (o ohm) between pins 43 & 44.

You can check directly all voltages and signals on the right side of connector (in schematic I mean).
Compare the readings with a good board.

 

[Instafixx]

I have 0.8 Ohms between 43 and 44

 

[2informaticos]

As I said, that line is good.
Check the rest of lines.

 

[Instafixx]

Voltages of SSD Side of J9600

PPVIN_2V7NAND_LB is 13V
PP5V_S4_P2V7NAND_LB is 0V
SSD_BOOT_LB_L is 1.8V
SD_PWR_EN_LB_L is 0V
STORAGE_LB_EN is 3.3V
SSD_RESET_LB_L is 3.3V
SSD_PCIE_CLKREQ_LB_L is 3.3V
PCIE_SSD_D2R_LB_P<0> is 0V
PCIE_SSD_D2R_LB_N<0> is 0V
PCIE_SSD_R2D_LB_C_P<0> is 0.8V
PCIE_SSD_R2D_LB_C_N<0> is 0.8V
PCIE_CLK100M_SSD_LB_P is 0V
PCIE_CLK100M_SSD_LB_N is 0V
LPSR_EN_LB_L is 3.3V
PP3V3_S5_SSD_LB is 3.3V

On a good board the diode to ground is .453.
But on my board its OL.

Missing Track ? Should I run a Jumper Wire from SSD_PWR_EN_L to SSD_PWR_EN_LB_L .

PP5V_S4_P2V7NAND_LB is still 0V. Same Issue?

 

[2informaticos]

"PP5V_S4_P2V7NAND_LB is 0V"
There is a problem; missing 5V_S4 on left side?

"SD_PWR_EN_LB_L is 0V"
Keep in mind what end "_L" means!!!

 

[Instafixx]

5v_s4 on left side is present.

 

[Instafixx]

Ran a jumper from PP5v_s4 to PP5V_S4_P2V7NAND_LB (Not at the life boat connector)
Now get all the necessary voltages. still the ssd will not show up.

 

[2informaticos]

May have another open line on the connector; check one by one.

 

[Instafixx]

PCIE_SSD_D2R_LB_P<0> is 0V
PCIE_SSD_D2R_LB_N<0> is 0V

These 2 are OL as well on my board but on a good board they have diode readings . ( I didn't check further)
Should I just remove the connector and run jumper wires left to right or replace the connector ?

 

[2informaticos]

Why don't you check left/right continuity, as above mentioned?
I suppose that only few lines don't make good contacts.