Hi I need to change a socket in my kitchen, when I bought the new socket I also bought a socket tester. In my kitchen I have 3 double sockets 3 fused sockets for the tumble dryer, washing machine and dishwasher and 1 cooker switch and socket. When I checked them the 3 double sockets and the dishwasher socket all showed the LN reverse fault. I have not checked the washing machine and tumble dryer ones yet as the machines are in the way. Also the cooker switch/socket shows that it is correct. All the rest of the sockets in the house all show correct. Has anybody got any ideas please. One other thing before the dishwasher leaked we used to get slight shocks if we touched the stainless steel interior of the dishwasher.