you can replace the part that goes into the wall yourself. this is the thing with the prongs. it is easy. just go to a hardware store (where you get more help) to get a replacement part. all you need to do is cut the plug part off fairly close to the old plug, place the cord into the new plug, snap it shut and you are good to go. snapping it shut uses two tiny spikes that pierce the cord on each side making contact with the actual wires inside the plastic covering. just follow the attached instructions. you can do it! used to be that you needed to strip the wire a little and put the wires around the posts making direct contact with the wires. now, it is much easier to use the replacement plug that i suggested above. i would try this first before paying the big bucks to the sewing machine repair service.