Extruder not heating

[mark10970 0]

My preassembled UM has been working well. Suddenly it won't heat, either under control of Cura or with the controller. Under Cura it seems to try for a minute or so, then the controller screen go blank then flickers on for a fraction of a second every 5 seconds or so. If I disconnect the power supply and run the controller from the USB, it continues to flicker the same way. If I then disconnect the USB and reconnect it, it goes back to normal. I have shut down and restaredt several times to no avail. Any ideas?? Thanks for any help.

 

[mark10970 0]

Solved it -loose connector. Sorry for the unnecessary post.

 

[thingster 0]

Which connector was loose on your machine?