It's hard to speculate why that output quit, unless there is a menu option that in a video sense 'mutes' the output that does not do the on-screen.
If I have lots of S inputs and only the single component input (DVD) then I usually just send that one direct to the monitor. Save a cable, save the switching and extra circuitry that the signal must pass through.....
There is no truth anymore. Only assertions. The internet world has no interest in truth, only vindication for preconceived assumptions.
