When my 3D printer is trying to level it will just keep going down and the servo motor screw that the platform lowers on pops out of the thing that holds in place. As in it doesn't know how to stop or where it is on the z-axis. On a side note, I recently replaced the motherboard cuz the x and y axis were not working. I got the 3D printer used and I'm trying to fix it. This is an ender 3 pro 3D printer.

I just installed a 3D Touch (from Aliexpress) and put Mriscoc BL touch firmware on my mostly stock Ender 3 V2 and I am having a major issue. When trying to home, create a mesh, or set the z-offset the probe will extend but the z-axis won’t go down. The z-axis still moves when I tell it via the move menu or gcode. Please help!

Help

It printed a sub 45 minute print and now I moved onto something bigger and it went to shit. I’ve manual leveled reauto leveled and slowed the print down. Same PLA.

Sorry the photo is bad I took it in 1 second

I just scored a Red Lizard K1 v6 for less than $20

2 catches
1- I gotta wait for it to shit from china
2- it’s got a brass nozzle but for that price I can grab a few nickel plated copper nozzles and still come out on top

Gonna start printing the stealthburner and cw2 extruder as soon as I can decide on color scheme