Just sat down with a fresh cup and knocked it into my keyboard. Turned it off and started pulling keycaps off, then soaked it up best I could to no avail.
Wouldn’t turn back on after so I dug out every screw, pulled the back off, soaked up as much coffee as I could on the pcb, and ran some isopropyl alcohol under the other side of the PCB where I couldn’t reach.
To my surprise this was enough to get it to turn back on. Keys were registering their neighbors too so I had to scrub it with a toothbrush, but afterwards it’s fully functional and saved me $250 for a replacement
Demineralized water is not conductive. All the dirt from the keyboard might make is slightly conductive again, but every time there has been a spill in a mechanical keyboard, I take it apart, and soak it in demineralized water, then when it has soaked for a while I rinse it in fresh demineralized water, and then let it dry. I have only lost one keyboard, and I have saved the rest of the keyboards numerous times.
I’ll keep this in mind for next time, I’ve seen a couple of people mention the demineralized water. It was 1am when I managed to pull this off so my options were somewhat limited as for what I had on hand at the time