@monytaker,
I just finished that project with the same 2017 Vista 29ve. We upgraded the couch to Recpro theater seating and wanted to tilt the TV away from the wall and more angled toward that area. Had mixed results.
Remove all the connections to the TV first to pull from the wall in one motion. The TV is held by the frame that is attached to the TV and is removed by lifting that out of the "bottom" strip of metal. As you unscrew the top hold the TV till all are out, then lift away. I'd bet the frame attached weighs as much as the original TV. Remove the bottom strip, and that's all gone.
I used this mount -
https://smile.amazon.com/dp/B077Z7NV...roduct_details. The mount works well in that if you line it up to the right of the cutout for the cables coming through the walls, you can line the holes with the existing frame in the wall. The smallest 4k TVs are 43, and the original is a 40" 1080p NON-Smart TV. The width difference is minor (less than 2 inches), but it will stick out a bit and into the hallway. I just put this in a few weeks ago and have NOT driven the earthquake on wheels yet, so we'll see how it holds.
A couple of observations -
- As noted, the 43" (I have one mounted in my backyard that I may swap out) will shift the mounting over an inch or so.
- The reason I went with that mount was to swing to the left (closer to the window by the dining table), and this appeared to be the most extended "arm" length - it's MUCH better but still is about 1/2 way angled (I'll post some pics later today).
- The mount holds the TV about 2-3 inches from the wall, and it has some play. I took a pool noodle and "arched" it over the back to keep it from rotating. It doesn't feel like it should "unlatch," but we won't know until we hit the road tomorrow for a long weekend trip.
- The angle and overall position of the TV is still NOT good for watching from the couch area - you have to look to the side, and after a bit, your neck will hurt, BUT it is much better than what it was.
- Best place is where they put it in the new redesigned 29v - above the dinette, but that takes away a cabinet - compromise for the couch area and not good for the swivel driver and passenger, so it's a toss-up.
- I also mounted a sound bar (Yamaha) under the TV - it works OK and much better than the TV with simulated surround and just the bar. That was enough.
- I use a Chromecast - so I fished the USB power cable through the cabinet to plug in and have the power come out behind the TV - a clean setup that works on the inverter. That plug, I believe, is also used for the TV.
- I also found that IF you remove the monitor panel, you can get a good look at that wall and how it's built - that helped me position the mount to ensure I was close to the middle of the "strips" that span the wall for the mount to hang on to.
Any questions, ask away.