So, looks like my screen has failed on my OpenEVSE.
The picture doesn’t really show it perfect, but the blotch you see in the lower left corner extends across the whole screen. So, looks like I need to replace it. In digging around I see the Winstar WH1602B2 display is used. I see they also make an OLED version of that display. I guess what I wonder if has it ever been looked into or would it even be compatible to use the OLED display over the LCD one? That would certainly help with low temperature refresh issues.
The two OLED displays I saw on Winstars site were