We repeatedly have a problem with our dishwasher where all the lights flash and we cannot get it to start. It's not on lock but we have tried locking and unlocking it anyway. Have tried all the buttons, have tried holding down all the buttons and have tried turning off/on both at power and at the wall. In the past we've had this problem, played with the buttons and have eventually it has started working. We don't have the dishwasher manual as unfortunately the house didn't come with it. Thanks Ronny