Well this idiot has done that more times that you've had hot dinners and I've never *once* been got by one. Moreover, on some models the only way you can adjust the pots o n the analogue board that control the screen dimensions is by... yes, taking the lid of and running it up topless!
It's no big deal as long as you are careful. You'll no doubt have missed (due to descending red mist) the fact the person even set the power switch n the back to '1' so he *didn't* have to reach round and switch it on at the board while it was live. That struck me as a really *good* idea!
I was more appalled by him using a screwdriver to lever the 2 halves of the case apart personally...
UPDATE: LOL. tomlee obviously had the same thought at the same time