I have become use to the KN7000 and Tyros 2 large pop up windows and would like to use a 17’ TV with my S900.

So far it is not acceptable. It shakes and some of the displays are split –the bottom is shown on the top and the top at the bottom. The TV screen does not always display the keyboard completely, it cuts parts off. If I use the TV for lyrics without changing it works well. I would like to use the TV in the same manner as I am using he window on the keyboard.
I have tried all the very welcomed suggestions with no success. My question:
Where can I go to get the information I need to make this work properly?

Thank you, John C.