I have a horsebox which has a living area with separate 12v supply for lights, TV, water pump, toilet flush etc. Everything works fine except for the TV. We switch on and after less than a minute we lose the picture. We thought it was the TV so we bought a new MEOS TV particularly for caravans etc and works on 12-24v. The TV works at home and works in the horsebox when the box is hooked up to mains power. However when switched to 12v we get audio but no video. We assume that there is a 12v power problem? Any ideas. Have you come across this before?

Ali: