Ursprünglicher Beitrag von: Chris Green ,
It could be a problem with the power supply outputting too much voltage and killing each laser (Though this is highly unlikely). A better thing to try would be to clean all of the dust out of the fans & heatsinks, and replace the thermal paste on the CPU and RSX with some Artic Silver 5. Since the blu-ray drive rests right on top of the CPU and RSX, the heat that they are producing might be damaging the laser assemblies. If you have a CECHG or newer PS3 (If the bezel on the front is gray and not shiney chrome/black) you can force it to rev up the fans all the way to clear out dust by turning it all the way off (With the switch on the back) and turning that switch back on while holding down the "Eject" button. The fans will rev up to max speed, and blow out a good portion of the dust.