I have the same furrion in my 2016 26dbh and it has an issue with heat. After about an hour of use there is no dvd or sound. Not sure if this matches your symptoms or not.
On a note of great customer service, I contacted furrion through their website. They sent me a brand new unit, no questions asked. Just requested that I send them the old one in return. Even included a return, pre paid shipping label.
That's the way customer service should work.
Hope this helps.