Okay, I plugged it in. I don’t have a switch installed so it’s “on” as soon as the plug goes into the wall. I’ve got lights on the power supply and the light on the board is on but no screen display (LCD). I’ve double checked the orientation of the plugs to the LCD and they seem to match the photo online in left/right/top/bottom/stripe orientation. No fans (likely don’t run until a print is running I assume). All three fuses good.
Make sure exp1 goes to (sc1 or p1 board dependent) and two to two. From there it is 50 50. If you get nothing, turn them around on one side. No combination can kill the LCD so try both.
I think it is pretty safe to swap lcds in either direction to either machine. Mine have been super reliable for a while now so I am interested to see what is going on.
A lot of computer stuff is automagic. I’ve been supporting them in one way or another for the past 30 years and I still get surprised(confused/pissed off) by them on a weekly basis!