Why are thermistor types 97 used sometimes one others other times?

97 is a user defined thermistor – this is what was used to create the firmware since the other thermistors (like the 14) expects to be pulled up by a 4.7k resistor (the thermistor itself is the ...

First layer is not sticking properly to the bed

Layer not sticking is most of the time a bed leveling issue. Bed Leveling is not only the part to get it about the thickness of a paper from the nozzle, but also adjusting afterwards to ensure optimal...

Duplicator I3 Plus Bed Shorting Problem

There may be a chance the bed / bed springs will short 24VDC to Ground. See the following page. Critical Bed Fix

I can not update the I3 Plus LCD Firmware to update the latest version

Your suggestion did the trick.  I first tried to downgrade the LCD to 2.16 Рwhich failed the same way (flashing LCD, no loading of images).  However, when I tried to upgrade to LCD 2.17, it l...