Dishwasher of 8 years started to only work on Rinse Only. Ordered Control Board and Panel to cover both bases. Replaced the Board and it worked fine. Returned the panel. After a week it would only work on Quick Wash. Thought the new Board had failed. Ordered new Board. Didn't help. So now thought the panel had failed. Reordered panel. Replaced panel with newest board. Worked...just long enough to fill the dishwasher with water. Now won't work at all. Replaced board with previous board still doesn't worked at all. I've reached my level of expertise and would appreciate any assistance.

Thanks.