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Yes, trace is good. I even removed again U3100 and Q3100 and measured resistance between PIN 9 of U3100 and PIN 4 of Q3100 and it's less than 1OHM resistance.

Replaced U3100 again, same thing. Q3100/3200 got same voltages

Now board is heating outside the case too on that specific port and I could trace what's heating. It's Q3100. I've replaced this twice and issue persists.

If I had a thermal cam I'd do it haha. Machine works with power connected to it and even charges battery normally, but turns itself off after some minutes due to overheating. Will need to compare diode between ports still...

Got this one here and it was not turning on. There was corrosion around U3900 area and some missing resistors there. I managed to get the board working again after placing missing components and cleaning up the area. Machine is working ok, except when I connect power to left USB-C port nearest...

SMC bypass same result

In Safe Mode I can't monitor clock speeds using Intel Power Gadget because it needs a proprietary kext to load.

Tested with known good original battery and replaced SMC. Safe mode will do now

Flashed BIOS, no luck, same thing. Tried reinstalling MacOS on another SSD to test, same results. I replaced SMC, same thing.

ASD did not catch anything. Will try BIOS

Hello. Got this board with a strange behavior. CPU clock is stuck at 0.8GHZ according to Intel Power Gadget and the machine is running terribly slow. This board has classic issue on R5301/02 area and on the under side too. Verified all resistors and traces and all good. Mouse moves normally...

Changing Q703040

Hello. Got this one here with no post. VCORE stuck at 1.08V. Tried flashing BIOS, same results. Verified all termination resistors, everything OK. CPU gets warm. Tried heat and flux around CPU to see if there was any crap under it, still no good. Any ideas?

This worked! Thanks

2V5_AWAKE_NAND is 3.5˜3,6V with or without RN430. Traces and R770C are good, bad U7700. No repair for this one then as I don't have any donor boards from this model.

Ran out of ISL here. Replaced it two times already. Waiting for new chips to arrive.

1.236V on C7050 without F7000

U/R6940 are under the shield. Will try removing F7000

Hello. Got this one here, which I'm thinking may have a NAND problem. It does not turn on, don't negotiate 20V with charger, BUT, after taking some measurements and inspecting the board a little under the microscope I found that PP2V5_AWAKE_NAND is around 3.5V oscillating and UN100 gets a little...

Diode Mode to GND on PPBUS - 0.431 P_IN - 5V AUX_DET - 1,289V VDDA/P - both@5V SMC_RST_IN - couldn't find a point that's not under the nasty shield to measure this one AMON - 0V BMON - 0V C7020 resistance - 3ohm C7023 resistance - 2.6ohm