actually, not me, since i work for a warranty service center, but i saw the t-shirt and had to post a picture of it. it says "I void warranties" and has a picture of many common screwdriver bits used in consumer electronics. if it's broke and it's still under warranty, get it fixed for free, don't open it to poke around. if it's out of warranty, and you don't have a service plan you paid for, go ahead, poke around all you like, it's already broken and you will a) find something simple like a bad solder connection, b) figure out what component has failed, c) take it to get fixed COD (take my word for it, the repair will cost less if everything is back where it belongs), or d) give up on it and toss it and buy a new one.

there may be no such thing as a free lunch, but a free repair on a warrantied item (or maybe the manufacturer can't figure it out and gives you a new one anyway) is a pretty good deal if you can resist the urge to see what made the thing tick before...