SamyGO

Sure, you have to get original your model Service menu settings back. I mean, might anyone on forum could take pictures of that menus you have changed. What exact settings are touched?

Then change the model back
You need to know how many key presses you need, you can do it even you don`t see anything clear on the screen.
We have TV users with exact your model, but can`t promise they read your help request soon.