nik
thanks for your posting. i actually tried to pursue comet but kept hitting a wall. i ended up having a local repairs company look at the LCD TV who advised me that the power circuit board had broken. They estimated the part at around £200. i then wrote to philips directly and after a few threats got them to supply the part for free. the repair cost me around £80.
i really wanted to pursue comet but they kept saying that their engineer had to come out and look at the tv (for a charge of £30). however i had already found out what the problem was, but they refused to accept this. when philips said they would supply the free parts i stopped writting to comet. although i would have liked to have taken them to small claims court as their a bunch of cowboys.