Because I was possibly having some HDMI handshake issues between my new Intel NUC D54250WYK and my UE55F7000 TV (I would only get picture from the NUC if I would turn it on before the TV was turned on), I decided to try and adjust some settings in the HDMI part of my TV's service menu.
Everytime before changing a parameter (ON->OFF, OFF->ON, 200ms->400ms, whatever), I wrote the original setting down and after testing if the new setting would work (in the end none did the trick) I return the paramter to it's original setting.
I can't remember when exactly but at one point when I returned from the service menu in normal TV mode (TV OFF and then ON again), the TV's picture had a greenish 'The Matrix movie like' tint to it! I've been through all the TV's picture setting a dozen times, tried counteless factory resets but without result.
The thing is, the green tint is there for all regular TV channels as well as all HDMI inputs (xbox, playstation etc.). When I set a HDMI input from default to PC, the green tint is gone! Also, when I now do a picture-in-picture (starting from a HDMI input set on PC) and set a regular TV channel as the 2nd picture, the TV channel's picture is also without the green tint. When I return a HDMI input from PC back to default (----) or return to normal TV, the green tint / filter thing is back again!
As I have all my HDMI inputs set on PC (for low lag/latency xbox, playstation gaming), the green tint is not an issue. But for normal TV watching it is!
Maby somehow I accidently changed a setting somewhere in the service menu or maby because of a bug in the TV some setting was changed and there is now way to set it back? I have no idea.
At the time, the TV's firmware was the original 1118 (no custom firmware). As I can't reprogram the same version firmware or downgrade, I can't test if a firmware overwrite / downgrade wil solve my problem (reset the setting that can't be changed via any means).
UPDATE: To check if a new / other firmware would fix my problem, I borrowed a SEK-2000 evolution kit from a friend. After successfully installing it, the TV's firmware shows 1001 (must be a new firmware numbering for TV's with evolution kit attahced). Now I can do a manual update to firmware 1003. Still, the green tint is still there

Although this forum is intended for SamyGO firmware related things, I hope someone can help my with my problem!
Greetz,
Dominator