I have unplugged the head bed cable and reconnected it. Same issue persisted. I even took the heat bed plate off the working printer and added to the non functioning printer. After rebooting I would get the same error. This let me to believe the issue is not related to the head bed.
I plan to take apart the working printer so that I can use the heatbed cable. I have not done this yet as it will be more time consuming and I am also nervous about breaking the only working printer.
indeed, this error can be caused by the heatbed, heatbed cable or, as a last resort, by the motherboard. Did you examine the heatbed cable connectors? There might be some visible damage, please also inspect the pins. If you do not want to swap the heatbed cable in order not to damage the working unit - please also examine the motherboard (both sides), one of the components might be burnt. You can send the photos via support form so we can consult with our technicians.
From experience, here’s how I solved it when I had about 4500 hours on my M200.
One day I got the above error and thought it was probably a bad contact, so I was thinking about replacing the connector.
However, I checked the connector with a multimeter to see if there was a problem with the contacts and found that there was no problem at all.
Next, I checked the motherboard and the heatbed, and as a result, I confirmed that the contacts of the solder connecting the large connector on the heatbed and the center of the bed were bad, so I re-soldered them.
And so far, it’s been working fine.
Hope this helps.
hello there, thanks for this answer, I got the same issue, I tried to re-solder but I’m not an expert, it didn’t worked. Even if I changed the cable, the perforated plate (not the bed yet) . Do you have a advice to give? How should it look? thanks
My understanding is that the above error is caused by a break in some part of the cable leading to the large connector, which is why I am not getting a signal.
The first assumption is to simply replace the large connector cable, but if you want to diagnose the exact cause of the problem without spending a fortune, you can use a multimeter to check the cable for a broken section.
This is because it may not be the cable.
The second thing you can check is if the solder on the bed is bad, like mine was.
But if that doesn’t work, you’ll have to check the soldering of each connector and finally check the connectors on the motherboard, which can be difficult for a non-professional.
First of all, the most important concept is that the signal from the large connector is broken. Based on the above concept, you can solve the underlying problem if you take a multimeter picture of the wired part of the large connector one by one.
I hope this helps.
Hello thanks for taking the time to answer! I don’t have a multimeter, so I tried everything else
I repalced the cables, the plate, the heated plate and I re-soldered the connection of the large cable on the heated board. I still got the same #31 (it was #33 first) I tried all the operations several times and in separate time, so it “should” be the mother board (that is more expensive new online than a second hand m200. I m going to buy a multimeter to test anyway
