The flip down tv in the mid cabin has stopped working. Haven't tried using it in a couple of years. The remotes don't work, and I've tried a couple. When I release the screen, it's blank. I do see a row of membrane buttons for tv/video, channel, volume, power, etc, but they don't work. There is a red power light on next to the membrane buttons, so I assume it has power. The kec DVD player looks like it's working. Any ideas on what to try next?