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This skipped from my measurements. I removed L7630, and it measures very low resistance to ground on PP1V05_S0_REG_R. -------------------------------------- L7630 removed. In diode mode PP1V05_S0_REG_R - 0.017 P1V05S0_LL - 0.177 --------------------------------------- PP1V05_S0_REG_R - 0.13Ω...

Hi everyone. Help please No signs of liquid and no physical damage to the board. L7130 - CHGR_PHASE - 12.58V L7195 - P5V1_SW - 3.33V L7430 - PPDDR_S3_REG_R - 0V L7320/10 - CPUVR_PHASE1/2 - 0V L7630 - PP1V05_S0_REG_R - 0V PPBUS_G3H - 12.58V PPVRTC_G3H - 3.33V PP3V3_S4 -0V PP5V_S3 - 0V...

PLT_RESET_L - 3.3V

I've missed this PP5V_S0 shorted to ground. Basically all CPU phases mosfets, U7701, U7400 and a few more components that get PP5V_S0 is dead. Applying 1V on PP3V3_S5 Chipset U1100 gets hot. I guess this is beyond repair, as I don't have the right tools to replace the chipset. Thanks for your help.

Powering the board without battery PPBUS_G3H goes to 8.59V With battery fan spinning and PPBUS_G3H goes to 7.89V. ALL_SYS_PWRGD - 3.32V VCORE - 1.74V U1950 Pin 1 - 3.32V Pin 2 - 3.32V Pin 3 - 3.42V Pin 4 - GND Pin 5 - 3.42V Pin 6 - 3.42V Pin 7 -3.42V All resistors from SPI is ok. I replaced...

PIN 40 on Thunderbolt port is related to the line PP3V3RHV_S4_TBTAPWR_F this is 0V at the moment. L7560 - PP3V3_S5 - pulsing L7430 - PP1V35_S3 - pulsing between 0.10V to 0.15V L7195 - P5V1_SW - 5.51V steady L7130 - CHGR_PHASE - 12.55V steady All the other coils has 0V

PPDCIN_G3H_ISOL - 16.59V steady(I mixed up with another line on my previous post) PP5V_S3 - 0V PP3V3_S5 - pulsing F7140/41 still good Coils Measurements in diode mode: L3095 - 0.539 L7720 - 0 L7195 - 0.338 L7520 - 0.366 L7130 - 0.458 L7430 - 0.265 L7630 - 0.122 L7870 - 0.334 L7560 - 0.146...

Hi everyone. Dealing with this board that does not display, but fan is spinning, battery is dead. Battery replaced, same issue. It had battery replaced a few months ago. It will sometimes not power on and missing PP5V_S0. 99% of the time when it's on and no display, it will have all the...

Hi everyone. I need help, please. This mac came as no power after battery run out. Opened and found a little corrosion on the board due to humidity and dust. All cleaned, and I found C9327 0 PPVIN_S5_HS_GPU_ISNS shorted to ground, so CAP replaced, and then I found U8001 shorting PP5V_S5 to...

I got same Mac with exactly same issue and behaviour. It was fixed by replacing SN650801 - U7600.

Yes, I've tested many times and even checked by someone else to make sure I'm not 🤪. I've done only revive option. This issue I'm mentioning is on restore screen before install system. I will do dfu restore on Monday.

On SMC bypass mode, fan cycles twice and stop. PP3V3_S5 - 3.3V PP3V3_SUS - 3.3V PP3V3_S0 - 0.10V (Cycle to 3.3V for a sec if press power button) PP1V05_S0 - 0V (Cycle to 0.99V for a sec if press power button)

I don't know what's going on here. After DFU revive it went to activation lock screen and guess what, no more screen issues. Then I went through the activation process to activate the mac and for this I had to set up a Wi-Fi and instantly after turn on Wi-Fi screen went off. I connected to an...

L7310/20 and PLT_RESET_L pulsing too

yes

With and without R8178, the voltages are. ALL_SYS_PWRGD - 0V CPUVR_PGOOD_R - 0.05V SYS_PWROK_R - 0V PM_S0_PGOOD - 0V SMC_DELAYED_PWRGD - 0V PP3V42_G3H - 3.41V

Yes, I mean R8178. CPU core voltage not present. USB has power, but no activity.

After remove the R8179 the voltage on L7420 is 1.20V.

I was testing without trackpad. RR313 - LID_OPEN/SMC_LID_OPEN_R - 1.16V RR203 - IPD_LID_OPEN_1V8 - 1.8V I don't have another board at the moment to compare.

All 3 lines has same voltage after display goes off. LID_OPEN - 1.16V AMR_LEFT - 1.56V AMR_ RIGHT - 1.56V