I've had this set for just over 3 weeks now and a recent fault has developed in that none of the buttons on top of the tv itself actually work at all. I can still use the remote control with full functionality and put the set on standby etc but to actually power the thing off means having to do it at the mains. I've called John Lewis today and they are arranging to send a third party engineer out to look at the set sometime after boxing day and as I understand it they've put another set on reserve so that mine can be swapped if the engineer agrees my set is faulty as it's less than 28 days old. I have 2 questions which are:- 1) Has anyone had a similar problem with their set, or any other make of set come to that, and if so what was done to resolve it? 2) If the engineer offers to repair it on the spot should I accept this or reject the set as faulty anyway and request the replacement I've been promised by JL? Any help or advice anyone can give would be much appreciated. Thanks.