I bougth Chimera extruder for upgrading my prusa i3. Howeber, after changing Marlin code I can't work with printer due to Pt100 are failing. I conected them to the amplifier board and on my screen I got that printer halted because the temperature was too high. After throwing away the idea of a failure of the amplifier, I measured the value from Pt100, both were arround 170 and 130 kohms respectively. Obviously, it is a very high value for a Pt100 resistor at room temperature. What can I do? I haven't used them yet along with the heater cartridges and I have only placed them.