I have a 50" Mitsubishi RPTV. It's got a major problem though. Once turned on, it only stays on for about 5 minutes before it turns off. Then it can't be turned on again for a while (usually around 24 hours+). The TV was purchased in 1995, so it's pretty old. Is this anything anyone has ever heard of? I ask because I don't really know where I would take it to have it serviced. And even if I did, it's a pain in the ass to carry it downstairs, and just as bad trying to haul it somewhere else (all I have access to is a small pickup). The TV isn't very good anyway, it's just big. I'm planning on getting a new one sometime anyway, so I'm just wondering if this thing is salvageable.