Screen ghosting

This might be a shielding problem on the video cable.

Flat suppression sleeve

If it's a shielding problem, then it will go away if you turn off everything else electronic around you. You might also troubleshoot it by bringing a magnet near the video cable to see if it changes what's on the screen (affecting the ghosting) or temporarily wrapping the cable in a cocoon of aluminum foil to look for changes.

Your "it seems to go away if I turn it off overnight" might just be something circumstantial like... you also turned off something electronically noisy like your HP Inkjet printer during that same interval.

This ghosting would be characterized by the unwanted effects moving.

If they don't move then that's pixel persistence. Given Apple's suggestion, then a fix might be to turn off the printer via the LCD screen and let it grind on that white background screen for an hour or so to let that overtake any individual pixel persistence from previous stuff.

 

When I have my R2 printing for several days, I do sort of remember the screen starting to look a little weird. You really notice when you turn off the printer and the screen goes black - but nothing seemed "wrong." But, I will take a closer when I get it going for a few days.

 

Never noticed it, but I've never run it more than 24h in a row, maybe 30h but only once or twice.

Had the UI crash on me a couple of times though (frozen and unresponsible LCD, but still printing and web interface fine. Finished the print and rebooted from web UI.

 

I've considered writing a screen saver but the type I'd do would just burn in green characters in vertical lines...