TV Screen went blue then black. Box switched off. Won't come back on. No lights in it. Pressing reset gives a power light for about a second then everything goes off again. Looks like total box failure. Tried rebooting, resetting main box, reconnecting. No joy. Box refuses to switch on. Have another box in a different room which we tried on the TV concerned, it works fine. The box that switched off however, is totally unusable, no lights, no connection, nothing.
