Ender 3 dead
Had my Ender 3 a couple of years now and it ran without major problems most of the time. I replaced the original motherboard with the BTT SKR Mini E3 V1.2 and the original screen with the BTT TFT35-E3 V3.0 touchscreen. The last addition was the BLTouch sensor, maybe a year ago now, running it with a fairly recent Marlin version.
A couple of days ago, I did some prints and it worked fine then, but when I turned it on today, the power fan as well as the motherboard fan started runnung, but the screen remained dark and no beeping indicating the screen board had recognized the printer. I then connected my Raspberry pie 3 and ran Octoprint but this also could not connect to the printer. The red power light is on on the motherboard as well as on the board for the TFT.
Any idea what I could try? I already checked all connections, replugged them.
Thanks for your suggestions and ideas!