Red / blurry noise in picture in menus and some HDMI sources in all other resolutions than 4k

MrBondHimself

Hi guys.
My Beovision Avant 55 has started making som strange red noise. This is noticeable in both the menus on the TV, but also via all HDMI ports.
The noise in the menu is always there, but the red noise in input via the HDMI ports are only viewable in resolutions LOWER than 4k - this is strange?
I have tried new HDMI cables all-around, and I have reattached all cables, powering off the TV for 5 minutes, and reset picture settings to default - nothing works.

PC connected to HDMI3: Red noise using lower resolutions than 3840x2160 (4k) - this is fairly OK since I have a solution for this by using the 4k resolution.Cable box fra YouSee: It's a 4K box so no problem here (HDMI1)Chromecast on HDMI2 (not the Ultra version) - this is very red and noisy - it seems like every green and green items in the picure/movie gets blurry and noisy.Anyone knows that this is and what the solution is? Beoworld forum users don't know what it is, perhaps some of you guys have an idea?

Examples. First some Netflix content:

                                                                                                                                               

...and here an example of the general TV menus (this shows the noise in the red and green squares (i have marked them with the yellow circle.
                                                                                                                                       

djholly

since red is a colour and not a noise i have nothing to add.

MrBondHimself

Fair enough, however I see this red colour as a noise, since it is not intended