I have tried switching on my grundig xentia which is about 2003 manufacture and it will not come out of standby mode. I can switch it off and on but it will not go past the yellow light stage. I know this is an old tv but it was too expensive to dispose of and I want to use it in my sons room, so does anyone have any idea of how i get it out of standby mode ? Nothing else seems to be wrong with the tv and it has been looked after although not used for a long time. I live in Spain. Thank you so much