Projector Screen comes up Blue and shows nothing.?

Panasonic Projector has not been working lately. When I turn it on it goes to a blank blue screen. I then click on the input selection tool (and usually there is something that appears letting me know what input I'm on) this however is not showing up. It just stays blue. It also stays blue when I click on menu... show more Panasonic Projector has not been working lately. When I turn it on it goes to a blank blue screen. I then click on the input selection tool (and usually there is something that appears letting me know what input I'm on) this however is not showing up. It just stays blue. It also stays blue when I click on menu and everything else. It doesn't change. Any ideas or suggestions what to look at to fix it?
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