Had the same problem , use a dishwasher cleaning treatment. Its a bottle you put upside down in the cuttlery basket.
Ian
February 2008
Hi Nick,
I've got a 5040 too. Have you tried:
a) stacking dishes differently (perhaps you are overfilling the machine?)
b) using different tablets. I had very poor results similar to yours from some Tesco branded tablets (sorry Tesco!) I get good results from Finish tablets & Somerfield's, to name a couple. Hope this helps.