I have a weird colour issue with my 55U7QF when using HDMI. The VIDAA software on the TV is old ... no support for new Plex and no Disney+, so I bought an Android TV box. Everthing looks okay once plugged in (menu etc), but as soon as a video starts to play, skintones gets a noticible pink hue and red becomes *really* saturated ... like bleeding saturation. When I change the colour mode, or even replug the HDMI, it 'resets' to normal colour, until a video plays, then this red tint everywhere.
It only appears to happen over HDMI. The Prime and Amazon apps on the TV still works, so I tried that - no issue. I tried changing almost every setting I could find on the Android box, all the resolutions, refresh rates, bit depth, HDR on or off, HDR conversion modes on or off .... everything. I changed HDMI cables, factory reset the TV and Android box ... but the problem still persists.
Plugging it into my DELL display or old Sony Bravia doesn't show the same issue. It's specifically on this Hisense model. Anyone else experience anything like this, or found a solution? I tried both Mi Box S and a Ematic Android box on the TV.