1. BAD CAPS
2. SAMSUNG BAD CAPS
And finaly DYNEX BAD CAPS.
Now you have to ask if you own a solder iron and have done this sort of work.
I purchased a Dynex 42" HDTV about two years ago. The picture quality is actually really great! About three months ago, something strange started happening, whatever input it's on will randomly flash repeatedly. It doesn't happen all the time, but frequently and at odd intervals. Also, if you press the menu button while this is happening, it will scroll through the menu items by itself. Even more recently it has started to turn on and off by itself. Things I have tried: removing batteries from remote(you never know), changing plugs and tv location. resetting system, removing all inputs. I left it completely off and unplugged for a week, and when I turned it on, it was perfect for a few days, then started up again. This is extremely frustrating!! anyone have any ideas what's wrong or how to fix this?