Will my Electrolux 3 way fridge come back to life by being turned over?

I have an RM42.... caravan fridge that worked before last winter when it was subjected to very cold weather. Didn't try it again untill this summer when it refused to cool on any of the systems even though the gas system ignited properly. I've read that turning the fridge over then putting it upright again can start it working again. Is this worth a try and any tips about removing and refitting?
thanks, Rick.