NTC thermistor broken? how do I test it

K8200 3D Printer K8200 - Wiring and electronics
1

Hi

I’m at the point in the build where you have to solder the NTC thermistor onto the heatbed.

I’ve never soldered before and hardly know anything about electronics, is there a way to test that this part is soldered correctly before I set about assembling the rest of it as I’d rather know now than have to take everything apart at a later date.

I have a basic multimeter should I be able to get a continuity reading between the contacts at the bottom of the board that connect to each side of the thermistor?

I’d appreciate any help/advice you can give

Thanks

2

Hi , you can measure the resistance of the NTC. Should be around the 80-100 kohm

3

Thank you, I’ve measured the resistance and the reading is around the 120k mark, is that ok?

4

hm, the resistance changes with room temperature.

5

That would make sense as the room I’m working in is quite cool at the moment, I’ll test it again when it’s warmed up a bit and see if I get a lower reading, thanks again for your help.

6

your welcome