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And PPBUS_G3H goes from 12.6V to 11.6B to 12.3B back to 12.6V

Took a closer look on PP3v3_G3H and PP5V_G3H. PP3V3_G3H is present and stable. PP5V_G3H is dropping to 4.7V every few seconds, rising up to 5.1V again.

Yes I'm getting steady 20V on bozh USB-C ports. Checked only PP1V8_AWAKE (since the other probe points are hidden under the T2 shield next to the SSD and i want to avoid removing it and raflowing the SSD acidentally) and this rail is pulsing too.

I did checked the voltages when the Board was all allone when I recognized the rails are pulsing. Didn't checked USB activity yet.

Trackpad is also turning on and off again.

Hi, I'm working on a MBP 820-01598 with pulsing rails. All rails up to PMU_ONOFF_L seem to pulse. PMU_ON_OFF_L itself is stable at 3.3V. PPBUS_G3H is cycling from 12.6V to 12.3V. PP3V3_S5 and following rails are steady 0V. Resistances on big coils seem to be good. No signs of lliquid on the...

Pins 19,20,15 and 7 seem to be good (5V, 5V, 3.3V and 0.65V) Got 8.5 Ohms on L7100. Changed U7100 but same result.

Yes I'm getting PP1V5R1V35_S3_MEM and PP0V75_S3_MEM. I resoldered all components very carefully. Had a donor board where i was able to compare the original positions of the components. No NOSTUFF components soldered ;-)

Hi there, I'm struggeling with an MBP 2012 15" (820-3332). It was running with typical screen blsckout issues so I resoldered U8900 with leaded solder but without success. So I wanted to replace U8900. While removing it, it slipped out the tweezers and landed straight on the components around...

Is the T2 Chip swappable from same model?

Hi there, got a 820-01598 - did get it with some corrosion around U6903 (see picture) and at the Touch ID. After restoring it with Apple Configurator 2 it stucks (after the internet recovery screen) at this state. Already tried to restore it again - same result. Tried another touch ID, but still...

This is what I get with thermal cam. T2 getting warm to 32°C

Same error when trying to revive...

I got an error after few minutes...

I was able to start it in DFU mode now. I started to restore. I still don't get any display or fan spin. How can I know when it is finished? Will leave it like this for a while now.

I replaced U3100 too what resulted in a small increase of voltage on all 4 ports (5.14V now). DFU mode seems not to work. Du I have to set the macbook i want to restore actively in DFU mode (power btn + right shift + left option + left control) or will it atumatically activate DFU mode on...

And also the keyboard and trackpad connector has some corrosion on it, such as area around U5104 (checked this area already for shorts to ground)

I did some diode mode measurements of the LDO outputs of the CD3215 chips...

Hi there, i'm very new with the newer USB-C MLBs and got a water damaged 820-01041 here that stucks at 5V 0.4A. It had some corrosion around U3200. I replaced some corroded components like Q3200, F3001, C3509, C3505, CC753 and CB212. The board took 4.8V and 0.6 A on 3 of 4 USB-C ports and 5V...

Forgot to mention: PP1V05_S0 is currently at 0.34V