u/vexatious-big

Hi everyone, I'm trying to identify the source of coil whine or capacitor squeal inside my Keychron K1 SE.

This started happening after I removed the battery from my keyboard; it's already 5yo at this point and I wanted to avoid any potential issues.

The keyboard works fine without a battery, the only issue is a faint coil whine which can sometimes be heard in a quiet room.

I know I could put another replacement battery back in, which would solve my issue, but I would rather avoid that if possible. I'm only using it in Wired mode.

Any help would be much appreciated 👍

Here is a picture of the PCB https://ibb.co/99Zxf8dK