I guess we have been fortunate. DH bought a 48 inch 5 years ago and we've had no trouble. It runs most of the time when we're home. I have tinnitus and have to have noise of some kind. I have a smaller one in the sewing room which also travels with us in the motorhome. Even with all the bouncing around, it's 3 years old and no problem.
I know all about those Marines! Mine is Navy, but the years since retirement have softened him a little. He still gets upset if anything bothers me, but otherwise he's becoming easier.