Today my LCD seems to have developed a dead spot. Every button that is entirely contained within a specific rectangle is no longer working.

I took the remote apart and cleaned the screen well and blew air on everything else.

Has anybody else experienced this or have an idea how to fix it short of sending it in for repairs?

I dread sending it in, as it has replaced nearly a dozen remotes, some of which use the same remote codes (RCA DTC100 and UTV).

Jeff