The printer stopped during a print, what should I do?

The filament may be entangled; remove-it, check if there is no more node and start again the printing.

My printer do not turn on

Check the printer is well connected and turn it on again (no worries, it happens even to the best)

The SD card is not detected by the printer

Remove the card and drag it back carefully, taking care not to sink the card too much, otherwise the SD card is not detected.

The display screen doesn’t work

Check the connections of the motherboard (you probably reversed the connections).

My engines do not turn in the right direction, what can I do?

Check your end-stop connections, your X have to go on the X- and the Y on the Y-