/vr/ - Retro Games

Now here's the color ramps from the 240p test suite. Shades of pure red, green, or blue seem to render just fine (though the greens are dim), but the grayscale ramp that is supposed to render below them doesn't show up at all. The yellow number line that is supposed to be printed across the top of the image is barely visible.

What could possible cause something like this? While I was doing these tests, the monitor flipped back to displaying colors properly for a few seconds. When it transitions from one to the other, I see horizontal bands of the image briefly flickering between the "dark" and "normal" modes. If I slap the side of the unit while this is happening I can briefly prolong the period of normal rendering. Sometimes mashing the input selection buttons in quick succession between live and dead inputs will also trigger it to switch.