Both my A1 and Mini got the nozzle blob of death months ago. I have replaced hotends numerous times, the toolhead board, filament sensor, and the extruder motor. I finally got the hot end to heat then it wouldn’t home on the z axis and failed calibration. Now, support just keeps sending me the same parts and I am getting very frustrated. Is there a way to check with a volt meter to see where the problem is? I did have an Ender so have a little experience but not enough to figure this out.
First try cleaning the bed. Then just clean up the blob and continue printing normall Always Turn On Flow Calibration And Bed Leveling!!!
I did all that in the beginning. It ruined the wires to the hotend so it had to be changed. It wouldn’t heat up so support started sending me parts.