Nice easy fix this one, firstly take out the soap drawer and with a long handled nylon washing up brush clean the soap box as it is probably sludged up I have had quite a few of these block up and do the same but also clean the jets where the water comes into it, if all else fails try turning the taps that feed the machine down slightly but only as a last resort.
powerhousesteve@hotmail.com, November 2005