After continuous use, there is a possibility that the interface button is getting worn out or damaged. This can be annoying and might even stop your extrusion process. There may also be overlooked or missing parts that were misplaced during operation, repair, or re-assembly.
Possible issues:
First to investigate the issue, the knob must be removed.
1. Missing spacer:
-
Carefully pull off the knob from the control panel with your hand.
-
Check if the knob spacer is present. This is a small black rubber plate in the middle inside of the knob, shown in with the red arrow (picture 1).
If this spacer has been misplaced, damaged or missing, it is best to get a new knob and spacer. You can order through contacting support.
In the meantime, the metal pin of the interface (picture 2) can still be used exactly the same way as the knob. It can be pushed to click or "select" items in the menu, and can be turned for scrolling.
Alternatively, a small folded piece of paper or rubber washer can also be used to fill up the space between the metal pin and the knob.
2. Missing nut
The two pictures below shows the metal pin with and without the necessary nut to hold it in place.
The following two pictures show the metal pin's connection with the display PCB. This is a top down view that can be accessed once you remove the top panel of the machine.
If the nut is missing, the "press" option of the button will simply not work. Pressing it will simply push the PCB slightly in.
