Socket - Plug - Plug Fuse - Cable - Switch - Overheat safety cutout - Motor...
One of these will be defective - Me? I would cut 6-9" of cable away at the plug end and fit a new plug - cheap, quick & easy.
Very, very often a conductor - inside the cable at the bend near the plug - breaks due to constant tugging and stretching from an enthusiastic operator.
Peccavi
April 2011