I have a van installation with MultiPlus 12/120/2000, Lynx Smart BMS, Smart Lithiums, and Cerbo GX with GX 50 screen.
During a recent repair visit the lithiums were over discharged, so the system was offline for a couple of weeks. Once I brought it back I noticed that the GX screen has a blue tint (or more specifically, yellow is missing). Red things look purple and black menus and text are bright blue. See below for photos.
If I connect to the Remote Console the colors are correct, so this seems to be an issue with the display hardware.
I tried rebooting the GX a couple of times but it comes up looking the same. I also disconnected and reconnected the HDMI cable at the Cerbo with no success.
Ha well it can’t just be G is missing because if so the pure red in the Grid header would still be red. Also black is the lack of R, G, and B but black stuff is showing as blue.
But anyway I will try swapping the cable and checking the connection at the back of the GX 50.
I’d try a power cycle of the display (unplug both its USB and HDMI connectors, then plug them back in). If that doesn’t fix it, the display is most likely bad.