Unless i prop a chair against the on /off button, the dishwasher stops working after 2-3 seconds – the panel lights go out and it stops filling or whatever stage it’s at. With the chair against the switch it does the whole cycle. My question is about the switch. Is it a dipole or just a ‘starter’ as it were? I’ve taken the control panel off but can’t see how to remove the switch to examine it without damaging it. Any advice most welcome. Many thanks.