Fridge light not working?

Hi, The interior light on our fridge has stopped working. Initially I though it was the bulb, but on checking it over, there is no power to the bulb holder. I was wondering if you know how to remove the door operated switch & if it can be accessed in situ? I don't want to have to pull the whole fridge out, unecessarily! As far as I know, it is an APM6121 or 6125.Many thanks, Dave