You don't have to open the system up for the hairdryer fix..just turn it around and blow the dryer at the back of the console for roughly 10-15 minutes. After that, let it cool near a cold place, NOT A FRIDGE, a grated window where air can come through to that part where you used the fan. I did this and on my 2nd try, my system started up again.
The only thing two things that suck about the PS Slim is no backwards compatibility and less media ports (sd card, memory stick ports taken out) the launch model is the best version ever, even if it's prone to YLOD.