I would certainly hope it would take more than leaving the TV on with a black screen one time ! The reason I say this is, at least twice, in the two months I have owned my LCD, I have accidentaly turned off the cable tuner box, instead of the panel.... but of course this turns the screen almost pure black, as if its off (least wise with my JVC..... some lesser LCD's might still be a light enough grey to notice it was still on ;-)
Seriously though, can anyone confirm that kcroyaljosh's problem is more than just a weird fluke ? Could I accidentaly leave my panel on with a black screen just once more, and end up with no color also ?
A bit concerned,