My guy said he replaced a couple "parts"...
Here's the story of its demise:
Day 1 of receiving the monitor, I bring it home and boot it up after many years of it sitting in a dry room, on a rolling cart, high off the ground. I let it warm up for awhile while I reset the adjustment knobs to zero/middle. This monitor has no on-screen display, just black until it receives a signal. I play several minutes worth of a game, on s-video and check the composite input, too. I leave the monitor on and eat dinner, afterward returning to some more gaming - maybe two hours. Power off, it's bed time.
Day two, I come home and decide to play some more games. I turn the unit on, let it sit for a minute and boot up the same console as the previous day. No picture. Audio works fine. I check my inputs and still nothing. Try the same console and wiring on another monitor and it works fine.
I reconnect the console to the Mitsubishi and cycle the power.
For a split second, there is video before the screen goes black - audio still works fine.
I cycle the power again out of curiosity and this time the picture flashes but the audio is very low (even at max volume).
Realizing something is borked, I turn it off for awhile before trying again later... No picture flash, still super quiet audio.
And that's all I know... It worked perfectly fine, without color distortion, brightness issues, or otherwise on day one.
In all honesty, I really feel like I should pick it up again, from the repair guy. If for no other reason than he isn't able to fix it and someone else (maybe me with some help?) can.