While trying to setup m;y synscan V5 hand held controller I accidently set contract so low that nothing is visible under any conditions from normal daylight to complete darkness. Although I have Synscan pro software on my PC and smart phone so I can operate the basic system, but I want to get access to the entire menu on the handheld. Does anyone have a proven fix to this problem? If no system fix, how about a step by step handheld button press sequence to reset handheld and then factory settings? Any help here would be greatly appreciated as I am about give up and buy a new handheld just to get back to visible led menus and prompts.