Aquarius hotpoint condeser dryer...does not start but light does come on?

Aquarius Hotpoint condenser dryer...start button not working.

It was working fine until one day i pressed the start button and nothing happened. The light still comes on, im sure it has something to do with the button itself and not the dryer. Any1 have any ideas? Do i need the button changing? If so hw do i do this myself without paying ridiculous amount of money for someone to do it for me.
Thanks