PS1- disc reading failed but still worked when upside down, gave up and got a new one, new one still works...wherever it is.
PS2 - UK launch console never went wrong (until I gave it to my brother and after a few weeks of being in a dusty house being done up, it failed, that was 2007)
PS3 - blu-ray drive fail
PS3 - 3 blinking red lights (overheat)
Hmm, pie.