[cctalk] Unknown Viewsonic monitor flashes Red-Blue-Green-White

I was given a 22-inch Viewsonic monitor. The label had been scratched off. It has four switchesd below the screen, labeled 1, 2, an up arrow, and a down arrow. When I plug it in, it flashes Red, Blue, Green, White at about one- second intervals. Pushing the buttons doesn't affect it. I haven't attached a VGA or DMI to it. Is it irreparably broken? Van Snyder