More than likely it is the PSU (power supply unit) has gone faulty , as it happened to mine just on warranty,I had the flickering, I got repaired then it went again a year later I still have not go it repaired yet and I am also looking for clues how to get the cover off as I have tried in vein.
It could be some of the capacitors they fit are to lower voltage so they get hot a pop.
cheers
LORD MONGO
August 2010