I have a problem with wiring in the kitchen. It's a faulty switch that stops working intermittently and seems to heat up and crackle from time to time. It powers the washing machine so I really need to use it. Also there's a light on it and also I can't switch it off, the switch seems to be stuck somehow. What I need to know is if its safe to continue to use the machine now until I get it fixed and how much should I expect to pay an electrician to fix this or should I try to fix it myself?