That also never happens to me too.
But I once bought a BlizzardPPC which I knew was defect and managed to fix it without and side effects!
Not really difficult if someone rams a screwdriver into the side of the PowerPC trying to get off the fan. I only had to solder a pin back to the board to get it going again.
Still waiting for me to wonder into a room where I can buy a bunch of A4000 for 25 euro a piece.
