Bosch - who can guess the problem

Our dishwasher has had some of the same problems as others - mainly the countdown sticking at "1", sometimes water remaining in the bottom, and sometimes the cycles taking for ever. I’ve checked the control panel and there are no burnt spots, and from time to time, the dang thing actually works like it’s supposed to. With so many possibilities, does anyone have an idea or where/what to check? I’ve read about the control panel, but hate to order and replace this part and it not work (correctly read as wife would have my head). Any help is greatly appreciated!

is that mean power failer if yes what cause it ,i cant get any code by pressing cancel nothing work on the board