No, there is nothing showing up. I press "Power" put the option on regular wash cycle, press and hold down the start button. The add a garment lights up and then everything shuts down. The door does not lock either.
The ONLY time nothing shows up on the display and everything shuts down is when I hit Power, regular cycle (or any cycle except drain/spin), and then start.
When I hit drain/spin and start, the door locks, the cycle starts and the timer on the display counts down.
When I do the diagnostic test, the test starts, the timer shows the minutes on the display.
So if I understand correctly, one control panel controls all cycles except for the drain/spin cycle and the diagnostics test cycle?
I don't understand how all the tests can work on the diagnostics test cycle but when I want to just run a regular cycle, then it doesn't work.
Every control board controls ALL of the cycles. The problem is that you're looking at it in black and white. When a control board fails it doesn't usually just stop working completely. Each control board has hundreds of functions. One of those functions on one of the boards can fail and it won't affect anything else except that function. That means sometimes everything will work like normal but the washer won't drain. Or just one cycle like delicates won't work, or possibly the washer will only fill with hot water, etc... The list of possibilities is literally endless.