The reason I wouldn't recommend doing this, doesn't really have much to do with console wear and tear, as it does with just being wasteful in terms of electricity use.
I'm frankly unsure as to whether or not the PS2 keeps game discs spinning at all times, but if it does, that would be some significant wear and tear for nothing. I would suspect it spins the drive down if the game hasn't requested data in some amount of time, but can't say for sure that such is the case. If someone has a clear PS2 case and wants to test it, or already has, I'd be interested in knowing the results.
Image burn-in on a TV or computer monitor is pretty hard to do these days. If the TV set is less than 10 years old, there's not a thing to worry about. You'd have to leave the same image up for a couple of weeks. Still, the best thing to do would be to simply switch the telly off.
But, I would just deal with the minor annoyance of having to repeat some level as opposed to leaving the system on. If the cooling fan should give out some night, you could find a rather crispy console in the morning. Assuming it didn't burn the place down. And while you can get replacement fans if you know where to look, game consoles are not designed to be taken apart once assembled. They're a huge pain to get apart. Maybe you should think about just stopping a bit earlier at night when you're gaming. If you finish one level and won't have enough time to finish the next, don't start it.
Is it ok to leave ps2 on while not playing but still in game mode,or set to pause,or is this extra wear and tear on the console.I also read something about image burning onto tv set.Time wise I'm talking about 8 hours or more.Reason-some games can't be saved till you finish a mission,otherwise you have to start over.
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