I've got one of those small 14/15" televisions, manufactured by Bush, which has suddenly started delivering sound but no picture. I left it on standby one day, then pressed a channel number on my remote to turn the tv back on and onto the channel. Then, there's audio - but no sound. I fiddled with the aerial for a bit and the screen came on, fortunately. However, a few days later, the same problem occurs - but no amount of fiddling with the aerial cable will fix it. Do I need to face the fact that my television has died, or can something be done to repair it?