Yes, that's right. A laptop power supply.
This afternoon I was playing Minecraft on my ASUS laptop. As many Minecraft players know the game is written in Java which, on high settings, can force quite a high demand on the computers CPU. After two hours of playing my laptop popped up a notification of "[switched to] Battery Mode". Check that power supply is still in laptop, still in wall, however no green "power" LED on the power transformer. Pick up the transformer and it is insanely hot to the touch, causing the floor to be very warm underneath it. I guess there's some sort of temperature cut-out on the supply to stop it catching fire but what does one do with a flaming-hot power transformer? This has never happened to me before (unsurprisingly) and since unplugging it from the wall and laptop I have just left it to cool. I've not used it since so has it been fried? The laptop itself is running fine (using it now). I was thinking about replacing the supply anyway but is there a "best" way of cooling one down, just in case?
Granted it's probably not going to happen to many people (and now I will know to play with more breaks, and probably on my desktop instead) but still...for science?
Answer
Absolutely, the best thing you can do is to allow the PSU to cool naturally, don't try to cool it quicker as doing so may cause damage (if it's not already damaged). Allow it to cool fully before attempting to use it again, and monitor your laptop and the supply when first using it in case it has been damaged.
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