Line across apex jr display

[exoticaquatix]

A week or so ago I went to manually shut off my ATO during a water change and noticed a white line across the display. When i change screens its goes away but then reappears. I have unplugged all the connections, reset (unplugged from the wall socket for a few min) the whole unit with no luck.
Any idea whats wrong or how to fix this?

thanks
-Nick

Sorry make that my Apex LITE not Jr