I have a wierd problem with my tv. It works fine for about 20 minutes. After that, if you try to change inputs (Doesn't matter which ones), the input does not change, the sound stops, and then tv turns itself off with the red lamp light on. If you unplug the tv, and plug it back in, it's resets the tv and it is fine for other 20 minutes until you try to change inputs again. I had a tech out to look at it. He "reinitialized" it and left. I called him back and he said he was going to call Mitsubishi. Has anyone heard or seen this issue? I forgot to note I do have the lastest firmware from Mitsubishi that was installed a couple of days ago. Thanks in advance.