I changed my 117 pound OEM 30" tv to a 36" Panasonic flat screen weighing about 40 pounds. There is a post somewhere on this forum with some pictures. If you need information PM me.
If you decide not to change it out, check the top of the tv. open the overhead and check the clip that holds the tv in the frame. After some time with the OEM tv in place that clip worked loose and I found the tv wanting to lean forward. I caught it in time to tighten it up, then replaced it. Holler if you are interested. The 36" makes a big difference in viewing.
Wayne MSGT USMC (Ret) & Earlene (CinCHouse)
2015 Winnebago Tour 42QD 2008 Winnebago Destination 39W
(RVM-14) It is what it is, and then it is what you make of it.