Hello dear Badcap Forum.
I have a small problem that unfortunately I can't get any further.
I have a MacBook Air 2022 M2 with water damage. I measured with my USB C volt tester and noticed that the Mac switches 5v, 14v, 20V and immediately restarts the tester after these 20V, this repeats itself constantly.
After taking the Mac apart, I could see corroded USB C ports. I cleaned these with ISO and then with ultrasonic. The USB ports are perfectly clean again (under the microscope) then I repeated the test and unfortunately the error pattern is exactly the same as before. Logicboard itself doesn't seem to have been exposed to water, but I still cleaned it with ISO and ultrasonic. Voltage injection on the fuse did not show any short spots (thermal imaging camera available)
When I connect the charger, I noticed under the thermal imaging camera that the ( I think ) RAMs that are on the M2 chip get hot for a short time, but after the charger switches off, they go away again. As mentioned above, this repeats itself constantly. The chip with an Apple symbol on it (top left next to the CPU) also warms up briefly and switches off again. But I think it's normal for them to get warm, or am I wrong?
I suspected the USB C chips but couldn't find any shorts with the multimeter (beep mode).
My last step was DFU. But it only loaded halfway and then stopped. What was very strange, after I entered the keyboard combination for DFU mode, the USB C port was stable again at 5V 0A and 4V 2. something Amps and then the program tried to load the software and collapsed halfway through, the port collapsed and prevented that more stores. Error code 9 USB connection. How is something like this possible?
I hope my text wasn't too long. I look forward to your answers.
Greetings Tito
I have a small problem that unfortunately I can't get any further.
I have a MacBook Air 2022 M2 with water damage. I measured with my USB C volt tester and noticed that the Mac switches 5v, 14v, 20V and immediately restarts the tester after these 20V, this repeats itself constantly.
After taking the Mac apart, I could see corroded USB C ports. I cleaned these with ISO and then with ultrasonic. The USB ports are perfectly clean again (under the microscope) then I repeated the test and unfortunately the error pattern is exactly the same as before. Logicboard itself doesn't seem to have been exposed to water, but I still cleaned it with ISO and ultrasonic. Voltage injection on the fuse did not show any short spots (thermal imaging camera available)
When I connect the charger, I noticed under the thermal imaging camera that the ( I think ) RAMs that are on the M2 chip get hot for a short time, but after the charger switches off, they go away again. As mentioned above, this repeats itself constantly. The chip with an Apple symbol on it (top left next to the CPU) also warms up briefly and switches off again. But I think it's normal for them to get warm, or am I wrong?
I suspected the USB C chips but couldn't find any shorts with the multimeter (beep mode).
My last step was DFU. But it only loaded halfway and then stopped. What was very strange, after I entered the keyboard combination for DFU mode, the USB C port was stable again at 5V 0A and 4V 2. something Amps and then the program tried to load the software and collapsed halfway through, the port collapsed and prevented that more stores. Error code 9 USB connection. How is something like this possible?
I hope my text wasn't too long. I look forward to your answers.
Greetings Tito
