Induction cookers - warning

I love induction cookers and have been pleased with this efficient and fast heat concept. But I have now had two of them and each went wrong within 12 months for the same or similar reasons.

Cracks, as you can see, develop in the case and these cracks let in spill from the pans and then the electrics get damaged and the unit stops working. On one I actually got a nasty electric shock from the controls. I cannot see why they develop. Its not strain from a heavy pan or such as we use them mostly to fry but nevertheless the design seems flawed. In the case above the top is a glass type material and the controls below are one unit so the small strip of plastic is only about 1/2 inch wide and thin so it cracks easily.