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I get the blue box in the upper right hand corner as well. I think it has to do with the signal change from your cable provider.
Sorry, there was a problem. Please try again later.You may download a copy of the User Manual (which includes instructions for using the remote control) at http://www.dynexproducts.com/products/televisions/DX-55L150A11.html?supportTab=open. The on screen input message may be occurring due to a remote control conflict. Try disabling other remotes you are using (remove the batteries) to see if the problem persists. You may also reset any remote control by removing the batteries, pressing all of its buttons, and installing fresh batteries. I hope this helps.
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