Huh. The seller said it was from Patch Point, so I thought it’d be better assembled (I just know enough to know it doesn’t look great).
The rest of the outputs are working though, so would the PCB connectors still be an issue? I’ll make sure they look ok regardless and give it another go.
EDIT: Yes, that seems to resolved it. Thanks, @Jonny!!!
EDIT 2: Eh, that worked for a little bit. Now it’s back to acting up if I look at it the wrong way. (sigh)