Audiovox AVT2540 won't turn on

Question

The TV in our RV turned off on it's own. Now we can't get it to turn on. Using the remote or on the TV itself, we still get nothing. The red light that usually comes on as we turn it on doesn't come on. The TV is basically built into the RV, and it would be extremely difficult to remove it, so I wanted to check what to do first before I removed it. Thank you.