Broken Playstation?

[Moloch]

A friend of mine has one of the original playstations, not sure of the model number but he bought it a week after the hit the stores, and it had a warning about prolonged use being harmful. Well apparently that held true, he left it on too long, and I think warped something from the heat. Anyone know what it is, and if possible, can it be repaired? Thanks for any info.