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Perfect. I understand better now. I only have voltage in one line. In diode mode, all with good values. U7700 PP0V72_S2_VDD_LOW - 0 PP1V2_AWAKE_PLL - 0 CAP_PPSPMU_VLDO9 - 0 PP0V855_S2SW_CIO - 0 PP0V805_S1_VDD_FIXED - 0 PP1V2_S2_CIO - 0 U8100 PP1V2_S2 - 0 PP3V3_S2_UPC - 0 PP1V8_AON_MPMU - 1.8v...

Correct me if I'm wrong. I'm using pages 29 and 34 to see the LDOs of the U8100 and U7700. The only line that has voltage is PP1V5_VLDOINT_MPMU - 1.5v The others, no voltage.

Used it for one day, the next day it didn't turn on anymore. I compared the U8100 and U7700 LDOs in diode mode, everything is normal! Doesn't recognize it in DFU mode.

Still learning about the power sequence of M1 boards. The board is perfect, no oxidation. PPBUS_AON - 12v PP3V8_AON - 3.8v I only have voltage on the CD3217 that has a charger. Is this normal for this board model? Not to show voltage on both chips together? PP1V5_UPC0_LDO_CORE - 1.5v...

I think the problem was the UB400, in the measurements it didn't have the 1.1v LDO (with the charger in its port). I changed it and it started working again. I'll test it and see if it doesn't stop.

The logic board arrived dead. There was a short circuit in the PP3V3_S4_SOC_PMU line (C4203). After the repair, it turned on and worked fine for 1 day. Then it stopped charging the battery, all ports with the battery are 20v. Without the battery, 5v and 0.004a. The ports of the U3200 and U3100...

The customer replaced the logic board at Apple 11 months ago. It is perfect, no oxidation. During use, it has caused kernel panics! Mac freezes, coolers go to maximum in 1 second and restarts. Sometimes it stays working normally for hours! Follow the report generated, maybe you can shed some...

Just to give feedback, the procedure works. The Mac now no longer turns on by itself with the screen closed.

The client reported that the Mac was working, but it stopped recognizing the charger and the battery ran out. The board is perfect, with no oxidation. But in diode mode, the PP3V3_UPC0_LDO line was altered by 0.033. The UF260 was heating up a lot. My question: can I replace just the UF260 or...

I think it worked! I'm still testing it, but the screen has been closed for 2 hours and it hasn't turned on.

To test and find out the bad side, correct me if I'm wrong. Using the logic of the older ones. I thought about removing the RR201 and making a jumper connecting AMR_RIGHT_OR_ND_1V8 to AMR_LEFT_OR_ND_1V8!

The Mac works fine. But it doesn't turn off when the screen is closed. The hall sensor fails and the Mac turns on (as if the screen had been lifted). If you leave the Mac turned off, with the screen open, it doesn't turn on. I checked the board, everything is perfect. I looked for the sensor to...

I don't have a recorder for this chip. But I found something strange. I don't have 1.8v on the CB302, but I do have it on the CB402. The CB302 line doesn't have any 1.8v line. I made a jumper between these components, but nothing changed.

It didn't work to restore. I still have 20v with the battery connected and 5v without the battery.

Restore in DFU?

I'm still trying to repair it. UPC_I2C_INT_L - 0v CHGR_RST_IN - 0v I checked R/C/Q7030/40 Is it worth replacing the u7000?

I checked and tested, nothing! Any other tips?

Yes, without the battery, it has 5v pulling 0.25a, on all ports.

I placed the logic board in a topcase with a good battery, it turns on, but does not charge the battery. It pulls 20v, but pulls 0.002a. The DFU restore attempt did not erase the Mac. So the system starts normally. U7000 Basic Voltages P_IN - 5.2v AUX_DET - 1v SMC_RST_IN - 0 VDDA - 5v VDDP -...

I did the DFU with the Mac battery. I'll try with another battery. Is it possible to enter DFU with the logic board outside the topcase?