[print is tilted only in bottom layers]

I have built a little 3D corner object to test the alignment of my UMO. Interestingly, the print is strongly tilted x-direction in the bottom layers (3mm) only, the y-direction looks fine. I have already strongly tightened the pulleys as recommended in older posts. This effect appeared from one day of happy printing to the other...

I am curious to learn your interpretation why this tilt is so much z-dependent.

Thank you,

Mattias

["Heating failed" screen flickering]

@apgodshell which printer?  Please add your printer to your profile settings so everyone knows what kind of printer you are talking about.  It could be the cables that go to the display as neotko says or it could be a bad connection to the bed.  For UM2 it's usually at the bed.

 

I had a similar "problem": the LCD was unreadable when I started heating up. After a short while the error message "Heating failed" showed up in the LCD, which was actually not true because the extrusion head got really hot. Only then I noticed that the blue LED on the extrusion head was off, and it was obviously a connection problem. I had not properly engaged the strain relief on the extrusion head, and previously the bowden tube had detached from the head and pulled the red/yellow/black connector out of the mini PCB. So no temp reading and no LED. I assume the missing temp made the machine put a lot of power into the heating so the LCD started flickering.