On my 2016 Forester, I use the remotes to turn the outdoor TV and radio on. Did you buy the MH new or used and do you have the manuals? I would think you have the 32" Jensen 12v TV, you say it has power but not coming on. No TV screen lighting upI was able to access the TV and radio from the back side of my sofa where there was a plastic housing covering the wiring. I was able to pull my radio out using the two tools that accompanied my manuals. My radio was wired incorrectly and the speakers didn't work correctly using the fader and balance. Could your balance and fader be turned beyond to no speakers like mine?
2004 Winnebago Minnie 22e(went to a nice family Oct 3, 2015)
2016 Forester 2701DS (Aug 31, 2015)
2017 Camping 12 trips 38 nights
2018 Camping 10 trips 38 nights
2019 Camping 6 trips 19 nights
2020 Camping 0 trips Cancellations 4