If you can't repair the switches, bypass them and add a foot toggle floor switch in the power cord. If you can't find that, then just put a rocker switch in the cord.
You might be able to replace the switch, but they are usually more robust than the socket. Check for a bent or broken connection in the socket and for damage to the cord. Check the cord tip for indications that it has a fuse in the plug. Good luck. Post images!