Adding to HarryM1BYT's description of his circuit board fix for his Hotpoint WD420.
I'm guessing all the Hotpoint range use the same circuit board as my Hotpoint Ultima WT741 washing machine developed the exact same fault.
For the faint hearted who are concerned about doing this fix...
Note the negative polarity markings on the side of the capacitor in relatioin to the board.<br>The positive leg is actually printed on the circuit board surface.