Previously in 3dPrint Odyssey....

I completed installation of the #SpritePro extruder on the #CR-10v3 #Creality chassis.
Inevitable fallout made me replace faulty nozzle thermistor, made a cable bypass, move Y-axis endstop, replace inner fans with the silent ones and...

Today's challenge is the #hotbed indicator showing flat 144*C, real temperature notwithstanding.
I checked the hotbed #thermistor circuit and it gives ~104 kOhm(?) all the way down to the mainboard (#Creality 2.5.2. #ATMega).

The only reasonable conclusion is that it is the analog port problem. If it is broken, I probably have no choice but to replace the mainboard - unless...

My clever monkey brain sees a spare analog port on the board (the one marked "Thermistor 2" below).

Would it be possible to reassign it for the hotbed thermistor? I assume it may need a recompilation of the firmware, but what the heck: I can do it if I have to, opposite to buying a new mainboard for another 120 EUR I do not have...