Hi. Just bought a used fridge freezer for my son's rented flat and although I switched it on before I bought it to make sure it worked, when I got it to the flat it wasn't working. Think its about 2-3 years old. The light is coming on but there's no refridgeration noise at all. I left it a few days to settle (although we had been careful and kept it upright while moving it) but there's still no joy. Should I give up and NEVER buy used again??