The photo shows a cooker hob ignition switch unit from a Neff/Bosch hob. One of the switches has failed. The issue was caused I think by ingress of liquid. I have dried the unit as well as I can. A replacement unit costs over £40. Has anyone ever opened one of these to repair it? I am reluctant to buy a replacement if it is possible to fix it. A quick check with a multimeter shows that this is likely to work by change of capacitance rather than conducting as a normal switch.