I have a nec X551UN here and am having difficulty just keeping the menu selection up long enough to make any adjustments and cannot get the selections to change from left to right and cannot get a picture to show up with any input at all. It's been in storage for quite a while but nothing too harsh. And it seems like it is'nt detecting any inputs as it want's to go into standby mode almost immediately after starting it up. And when it does start it randomly shows inputs connected while only using hdmi, but then goes off again.
Amy ideas on what to check for?