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noo i stays on 5V ok i will buy another one

Hey i have a problem with this M1 Macbook. It comes in with a shorted UF400. I replaced this but still no boot. In the first seconds when i plug it in. It takes 200 mA. And the it stays on 27 mA. I tried DFU also. No DFU possible, i tried even with force dfu pins. I checked PPBUS_AON =...

okee is it possible to swap boards? what do i need ? T2 chip? nands?

Hey i have a Macbook Mainboard here 820-01700-A. It was a waterdamage. i clean all and all looks ok now. I have dfu i tried dfu revive. but failed with (AMRestoreErrorDomain error -1) did you know what i am missing? Any chance for data? can i swap t2 and nand to new mainboard?

Okee soo no chance for data?

no possible. it dont react. When i run revive it just get to this apple screen in the picture. After some seconds i got the error mesage. When i turn on again, it is in recovery mode.

i do revive. We need the data. i tried all. Same error but sometimes i have apple logo with loading bar and fan is spinning.

I had a ripped filter. i soldered back. now i have this

the Mac doesnt work, so something goes wrong with the revive. may i need to change the U3100. I have a notification cant use thunderbolt accessoir

mhh okee maybe i have image problem? i dont know. i will try hdmi adapter and see maybe i have image on tv. or what do yo0u think ?

i tested today, it dont make any errors. Now it goes without message in the lock.

i just reballes i dont change U3100. I am pretty sure why? I can try tomorrow again and send a screenshot. If the Logicboard is not repairable. How can i recover the data ? Just a question. I work a lot on smartphones and do boardswaps. Transplant cpu nand eeprom to a new logicboard. Is that...

Hey i have a 820-01949 macbook. I had a short on PP3V3_G3H_RTC. There was little corrosion under U3100_R. I cleaned that and soldered back. Short gone. Alle seems good so far. I tried DFU repair device. It stops with the dialog. Gave up waiting for device to transition from DFU state to DFU...

I thinked of that and replaced U7000. I will make it tomorrow. Sadly my customer will wait only until tomorrow i hope it will work.

okee the problem is i dont have good board to compare. What is the right value? What about my missing 3V3 ? will a bad component in tzhat line cause this too ?

The line is good i have 3V

i have 1.23 V now. Maybe i measured wrong, cause C7022 has 5.19V. Whatever. Is there a list for what Voltages are important and what voltage i need ?

ACIN: 5.19V VR_AON: 3V ACOK: 0V 390 LDO_3: 3V LDO_5: 5V

Well at least you have all diode readings of the U3100 now. 3V3_G3H have 360