Well, since noone answered, I just took the plunge and soldered a cable to pin 2. The display does not turn on.
This is how it looks like. I guess, I just order a different display...

Hello everyone. So I have another board variant that couldn't be found on the Wiki, so I want to ask for your help. 20210227_112348.jpg How do I proceed from here? Searching for SK-243-Main-V5.1 didn't show me any results, so I can't provide a datasheet for now. Let me know if I can share the Aliexp...