Is there a way to check to see if a wire/thermistor is broken? After switching my board out (see previous post) my hotend thermistor seems unresponsive, and when I try to move any of the axis cura says " Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)". I believe It is the thermistor because…well because cura is not giving me a temp reading at the top of the dialogue box like she (I guess its a she) normally does. Usually it displays Temp: 23 Bed: 23, but now it only shows Temp: 23. I know that the heated bed one is fine because when I pluged it into the place of the hotend thermistor it displayed a temp. This ever happen to any of you before? thanks.
This happened to me once and it was because I accidentally swapped the sensor with another component.
@Kevin_Danger_Powers I labeled all the components b4 disconnecting with tape and a marker, but it is still possible
@Kevin_Danger_Powers ok so lol you where right (FACEPALM) I put the fan in the thermistor slot. But now it reads 127c temp, and the bed shows 23. But when I try to extrude it says “cold extrude prevented”
@Matthew_Del_Rosso hmmm… New problem… Does it always say that? What if you try to preheat it? Is it ALWAYS 127? Have you tried restarting the printer?
@Kevin_Danger_Powers yup its still says 127, and ive restarted multiple times both the computer and cura. Ill try again tho. Also if i preheat it nothing happens
@Kevin_Danger_Powers I changed over to octoprint to see what it would read and it reads 127.1
It’s possible that the pin is damaged. It can only source/sink so much current. Fans typically have a low resistance, so when you plugged it in there it could have shorted it.
The easiest way to test is to replace the thermistor with a 100k resistor.
@Stephanie_A but i didnt even try to turn the fan on, so no power got to that point. Is it still a possibility that it got damaged?
@Matthew_Del_Rosso I doubt it. If the fan never turned on then there was never any current going through it. Granted that anything is possible but it seems very unlikely to me. Have you tried swapping your temp sensors again? Because that would let you know if it’s a sensor issue or a board issue. It’s more likely that you damaged a wire or something than it is that you fried the sensor.
@Kevin_Danger_Powers i did swap the sensors and all that happened was the hotend read 23 and the beb read 127
Well then it seems like there is an issue with the sensor itself. It’s possible that it just failed and the timing was just a coincidence. But if you know it’s plugged into the right port and nothing is damaged, you probably need a new sensor.
Yup, if it followed the sensor then the sensor is bad.