That's bizarre, is it just the TV's internal menus that work ok, or is it all menus from all devices that work fine? From what you said I'm assuming just internal TV menus but just confirming.
I'd probably unplug everything and start from a single source using different kinds of input and test the inputs, though if they all are messed up there's probably something wrong internally with the stuff that processes the incoming signals.
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Uncertainty is an uncomfortable position.
But certainty is an absurd one.
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