Thanks for the speedy response! I was thinking along those lines, my list jumps from H46 TO H52, usefully omitting the one I want. Welcome to the world of the modern appliance!!
Cheers guys. There was a small surface mounted fuse on the pcb which had obviously failed. Pity the the components are encased in resin thus necessitating full board replacement. Replaced motor too just in case there was a fault with that causing explosion on pcb. It was a Chinese manufactured model BTW