I'm embarrassed that I even have to ask for help considering the lead-up to it.
I attempted a basic battery swap for my Go, but it flat out won't boot now with either battery.
It charges, orange light stays on for what feels like a full cycle and turns off, but the power switch causes the power light to blink briefly but then stay off.
I tried reading the Indonesian blog linked here but that hasn't helped me very much. It says the first fuse next to the battery connector should read 4.2v with a battery plugged in... but I get at best 3.8. Last I knew, a blown fuse would be an open