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Printbed not heating anymore

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Do the servos move? Does the head heat up? If not then ignore everything below:

I had this problem. Very easy to fix. It's usually the connection to the plate - to the bed. It could also be underneath the larger panel of the printer.

Remove the glass (don't cut yourself - use pliers on the clips).

Remove the 3 leveling screws. Remove the 2 screws holding the black wire in the back. Take the bed apart (there maybe be another screw but I don't think so.

Inspect the cable connecion to the board. The larger 2 wires are for the heater. The smaller 2 are for the sensor. Pull gently on the larger wires to see if one is loose. If they seem fine unscrew the 4 wires and remove the heater board and reflow the solder for the two connections for the heater. You need a soldering iron. Put the wires back in and test it just hanging like this. If still broken time to check underneath the UM. Or check the voltage with a voltmeter at this end of the wiring and on the plate.


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