Common manifestation of this problem: no lights on the control panel and when you press the power button, you just get three or four quick beeps.

Do the test on this page. If unplugging the blue harness from the MCU results in the control panel lighting up normally like the machine wants to run (but can't because the blue wire is unplugged from the MCU), then...

Unplugging the blue harness from the MCU resulted in the control panel lighting up normally.

You be needin' one of these:

Click on Pic

Source: Kenmore HE5t F71 error code and won't run