I have a Mitsubishi VS-60707

Try this nubs.

Take the speaker panel off, and then the other black panel directly underneath exposing the guts, there should be some multi colored wires exposed that go to your power on and volume up and down, whatever... follow the wires up underneath, they go in the hole the panel was covering up.. (dont try to take the screen off just plain dumb..) there should be 2 white plugs connecting the to sets of multi colored wires just inside that go to somewhere in the back of the tv... Unplug them both big one first then push power on nothing should happen yet.. then unplug the second one wait about a minute or whatever plug them both back in and push power. it should come to life... remember not to touch random **** or you will get shocked to ****. MY vs. 60707 works fine now... (you might have to do this a couple times before the fuckin' passive aggressive ****** will work:)
form kyle c peace..........

Most common thing on the model to cause werid problems such as this is a fluid leak. There are 3 tubes in that set a red, blue and green. These tubes get very hot so they have a coolant in them to keep them from melting. The seals on the tubes have been knowen to brake and leak some coolant on the board and as you know liquid and electronics dont mix. I would reccomend opening up the front of the tv and looking in with a flashlight to see if you can find any corrosion or fluid on the boards. Let me know what you find!

Tim Nolan