Sounds familiar. My TV lays flat and slides back in the wall, and always gets water on it. We keep a bath towel on the front of the TV to absorb the drips. Have tightened the door, seals are good on the door and against the coach body. Part of the problem is that water can set for a long time on top of the seal behind the door, and when the door is opened, that water can find it's way to the top of the TV. If any gets past the seal while washing or raining, it can find it's way to the TV also. In the past I have opened the door to find water on the TV screen.
2015 Itasca Sunstar 36Y w/2012 CRV toad