Hi, i bought two 15 inch Onn Tv's from Asda.they only have occassional use and are now about 18 months old. Both Tv';s within a week of each other went off while watching them. I can hear thgere is power getting to the TV and the adaptor are working but the red On button is not illiminated and no picture. Can you help?

JFH, January 2010