Hi again,
Before I started looking for a new soundbar, I decided that it would be pointless to look for one that is made for RVs because it would be hard to find, it would be of lesser quality and the choices would be very limited so I decided to go for a soundbar made for a home.
I bought a VIZIO SB3651-E6 on Amazon (see the link below). If you do some research, you will find one for $200 or less. You could also find one for about $180 if you don't mind going with a refurbished soundbar. I went with the new one for $20 more.
I lost the radio capability but the reception was not good in my RV anyway. I still have the possibility to play on the soundbar whatever is playing on my electronic devices (smartphone, tablet, laptop, etc). I also lost the capability to play music on my outside speakers but I did not care since I very seldom used them anyway. I am sure that you can find one that has audio out capability for outside speakers if it important to you.
This one has SmartCast which means that if you have a network (router) in your house, you can play what is on your smartphone (for example) on your TV and soundbar. For example: I am watching a video on Youtube on my smartphone and decide that I would like to watch it on my TV and listen to it on my surround sound system (soundbar), I click on one icon on my smartphone and voilà!
I hope that this will help you. Let me know if they finally fix it.
https://www.amazon.com/VIZIO-SmartCa...s=vizio+sb3651