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Clean board with no liquid damage at all. 3V3_G3H = 3.3V SMC_RESET_L and BUF_SMC_RESET_L = 3.4V Diode Mode ------- U3200 Powerline C3200 = 0.376 C3201 = 0.147 C3204 = 0.527 C3205 = 0.497 C3206 = 0.536 C3208 = 0.526 ------- U3100 PowerLine C3100 = 0.376 C3101 = 0.156 C3104 = 0.527 C3105 =...

Yes, i did. With 3 Different 2015 LCD Assembly.

I2C_TCON_SCL/SDA = 0.734 - 3.1V and goes to 0 after a couple seconds. R5350/51 = 2.0K BKLT_SD = R7702 Pin2 = 63.4K = 12.41V

R7750 to R7753 all good. SCL/SDA = 0.555 Diode Mode - 5V

I tried with a different screen, still. Also the R7750 and 53 Seems fine.

Clean Board, however 20v BUT 0 mAh PPBUS_G3H = 12.56V PPBUS_HS_CPU = 12.56V PPBUS_HS_GPU = 12.56V PP3V3_G3H = 3.3V PP5V_S5 = 2V to 5V in Loop! PP5V_S3 = 2V to 5V in Loop! PPBUS_HS_OTH5V = 12.56V Any hint from here?

Clean board and I can see the apple logo, however, no BL. Already replaced the U7700, but still. I do have the enable, nut 0V on the PPVOUT_S0_LCDBKLT. W/ the screen Plugged: U7700: Pin 5-18 = 5V PPVOUT_S0_LCDBKLT = 0V / Diode Mode 0.31 PPVOUT_S0_KBDBKLT = 5V BKLT_EN_R = 3.2V LCDBKLT_EN_L =...

PCH_DSWVRMEN = 3.2v PM_DSW_PWRGD = 3.38v PM_PWRBTN_L / r1239 PIN 2 = 0v

PPVRTC_G3H = 3.3v PCH_SRTCRST_L = 3.3v RTC_RESET_l = 3.3v PP3V3_SUS = 3.3v

PM_PWRBTN_L = Pulsing - Drops when i trigger SMC_ONOFF_L = 3.3V PM_RSMRST_L = 3.3

PM_SLP_S5_L and P5VS4_EN? No Pulse at all. I try to triggering SMC_ONOFF_L and still.

I got the 3V3_S5 Back! But still 0V on S4

U7501 12 3.3V 13 2.2V 21 3.3V 22 3.3V 23 12.56 29 5V

The board had a short on U7501 on PIN 23 and 24 I replaced the U7501 and i got the PPBUS_G3H back, however, i dont have PP5V_S4. Here is some measurements: PP5V_S5 = 4.9V PP5V_S4 = 0V PP5V_S3 = 0V PP3V3_S5 = 0.9V - Diode Mode 0.077 Any hint, helps. Thank you

I checked all that also for short to ground. Here is the funny thing: When i removed the U1930 , I Got all the missing rails back, but still not getting USB activity. The CPU gets warm after 2-3min. Without U1930 PPVCC_S0_CPU = 1.05V PP3V3_S0 = 3.3V PP5V_S4RS3 = 5V PP5V_S0 = 5V PM_SO_PGOOD =...

ALL_SYS_PWRGD = 0V Re-Checked: PM_SLP_S3/S4_L = Pulsing to 1V after SMC is trigged and goes to 0V PP5V_S0 = Pulsing SMC bypass nothing happen

Clean Board no short to ground in any rail. PPBUS_G3H = 8.56V PPVRTC_G3H = 3V RTC_RESET_L = 3.3V PCH_SRTCRST_L = 3.3V PCH_INTRUDER_L = 3.0V PP5V_S4RS3 = 0V PP5V_S5 = 5V PP3V3_S3 = 0V PP3V3_S5 = 3.3V PP3V3_SUS = 3.3V PM_RSNRST_L = 3.3V PP3V3S3_EN = 0V (no pulsing) SMC_ADAPTER_EN = 3.38V...

Here is the issue: I have all the rails... After 5 sec the PPVCCCPU_S0G 0.947 drop to zero. The CPU gets hot, but no USB or VIDEO activity. I already re-program the bios, replace from a good board and nothing work. Any hint at this point?

The board looks like brand new, however, in DIODE mode on PPBUSG3H is 0 and seems in short. I pulled R5400 to make sure the PPBUS was the issue, and pin 2-3-4 give me the right measurements in diode mode, but not PPBUS_G3H. Any hint?

I do have all the missing rails without R1931 , However, the rail is missing is CPU_VCCST_PWRGD. Without R1931: Pin 1 1V05_S0 - Present Pin 2 CPU_VCCST_PWRGD - Not Present PM_SLP_S3_L - Present PM_SLP_S4_L - Present With R1931: Pin 1 1V05_S0 - Not Present Pin 2 CPU_VCCST_PWRGD - Not Present...