My KV36FS70 has developed a fault which the engineer puts down to a faulty tube. They recommend that the TV is replaced as its only 6 months old. My supplier is taking the set back to check in their workshops but they are keen to replace the tube rather than the whole TV. I am not happy about this and am about to do battle with them... But I wonder if it is actually possible to do a tube replacement on a TV of this size/complexitity in "workshop" (i.e not factory) conditions. When you look at the number of settings there are under the service menus, its hard to believe that someone could set a TV up without some very specialized tools/test gear.. The sort of thing that would only be found in Sony's factories. Has anyone ever heard of someone having a tube like this replaced and been happy with the results?