Bosch wfd 2060

Hi ive been to a bosch wfd2060gb/01 washing machine and the problem is when it gets near to the end of the wash cycle it does a couple of spins full of water then the wash light flashes. Then if you put it onto the rinse programme it goes ok for a while then it flashes the same again. The whole machine keeps switching its self on and off very strange any ideas as i think its a control board fault.