I have a jvc av48wp55 that gets stuck in demo mode sometimes when you turn it on. Then I also have a problem with the set acting like there is a button stuck and it brings up the menu screen and just cycles thru all the adjustments. The first two times it did that all I did was turn the demo mode off and that worked, but now that doesn't work because the demo mode is off and all it does is cycle down thru the menu screens just as if you would be holding the ch down button. Any solutions?

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