I finally found that contact 3 leads to a capacitor and a transistor, which supply power to the joystick. I was misled by what I found on Google.It was actually normal for it to have no resistance reading. In the end, I fixed the issue by connecting four wires directly to the joystick...
Try installing a known-good MAX77620H and observe whether the noise persists. While this chip generates multiple voltage rails, the issue specifically involves the 3.3V line—which eventually outputs correctly—so the fault might not lie with the chip itself but could be located somewhere along...
Red LED? What version of the firmware are you using?
If the motherboard is making noise, it is highly likely there is a short circuit. Check whether the 3.3V rail is being generated correctly—is there any instability or fluctuation?
I need help. I found that contact 3 has no resistance reading, while the other three contacts show normal resistance values. So, I scraped into the second PCB layer at this contact, but it still reads no resistance, leading me to conclude that there's an internal trace break within the board...
https://github.com/Atmosphere-NX/Atmosphere/issues/2664
just add that line above to your atmosphere/config/system_settings.ini file and reboot, then the problem will go away.
default_auto_upload_global_setting = u8!0x0
This is an older chip, you need to update the memory card file.
https://github.com/Atmosphere-NX/Atmosphere/releases
https://github.com/CTCaer/hekate/releases