Recent content by Instafixx

PLEASE HELP

Replaced U8100. Still the same.

Diode Mode to Ground : All diode readings are same. PP3v3_S2 is 3V PP3v3_S2_UPC is 0V. Isn't it odd?

Macbook A2338 PPBUS at 12.3V PP3v8-AON is 3.8V 3v3_S2 is 3V 5v_s2 is 0V 1v25_s2 is 0V PP3V8_AON_MPMU_ISNS_VIN is 3.8V PP1V5_VLDOINT_MPMU is 1.5V PP1V2_S2 is 0.2V PP3V3_S2_UPC is 0.2V PP1V8_AON_MPMU is 1.8V MPMU_VREF_ADC 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 ?

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.

5v_s4 on left side is present.

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...

I have 0.8 Ohms between 43 and 44

I get 13V at PPVIN_2V7NAND_LB is that ok?

I am still unable to understand.Please guide me

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

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?

Please reply

No it's not pulsing. EDP_PANEL_PWR_EN goes upto 3.3V very briefly.