Bought Loewe Xelos just under 5 years ago, and up until now it has been trouble free. However today pressed on/off switch to turn on the TV and the set just doesn't want to fire up. There is no picture or sound, the only sign of life is the red and green LED's on the front panel which stay permanently lit, except for the green light which turns off for a split second then back on again every 20 seconds. Can't feel any static on the tube! I'm guessing this is a Power supply problem ? Has anyone experienced the same fault ?