Hey all, I have an MPCNC promo that I built a few years ago. I got a little sloppy when adding a laser to it and bridged a few pins with my multi meter and fried the board. I ordered a new Rambo 1.4, flashed marlin on it, and hooked it up expecting it to work but all I got was a blank blue screen. I took the LCD off my Ender 5, and that worked. I would use that, but it has no capability to read a SIM card. I’m pretty green to editing code so not sure if the board is configured correctly. Any help would be great. Thanks!
Each screen has its own set of code.
Maybe start with some pictures of the screen that works and the one that doesn’t.
What code did you use the V1 code or make your own?
Hi Ryan, Thank you for your response. I actually found some old threads on here that showed some folks flipping their LCD ribbons upside-down to fix this issue. I tried it and it worked, so crisis averted!
Thanks!
Boom solution!!