Whirlpool cabrio washer mod # wtw8240yw0 will not turn on unless the power button is pressed and held for at least a minute.

SOURCE: Duet Whirlpool Washer

You need to go to the right, to the end of cycle signal volume control button. Push it and hold it until the beep and it will go off. This is the "child safety" feature so that little ones won't interrupt your wash when they push the buttons. (and they will)
Michell~

SOURCE: Cabrio washer want start.

leave the door open and try it again if it does the same thing as before the door lock has gone

SOURCE: Whirlpool Cabrio top loading washer F1 Error

F1 means the control board is shot. Call whirlpool and they should take care of the parts and labor even though your machine is out of warranty.

SOURCE: whirlpool cabrio washer keeps flashing code F50

The F50 error code indicates that the RPS (rotor position sensor) detects no motor rotation. Check to see if the basket spins freely. If not, you could have an item caught between the outer tub and the inner spin basket. A toy or other item underneath the washer could also prevent the basket from spinning and would result in this F50 code.

If the basket spins freely, you could have a wiring failure that would prevent the motor from spinning.

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SOURCE: my Whirlpool Cabrio washer won't start when

The Start button is broken, the user interface board is not working, or the machine/motor control board is out. Perform the diagnostic test to verify all machine functions. The Start button is indeed broken if machine functions work fine during the diagnostic test.

Put the machine in standby mode by plugging it in with all indicators off, or with only the Clothes Clean or Done indicator on. Select any one button except POWER, START, and STOP then follow the steps below, using the same button.

Press/hold for 3 seconds, release for 3 seconds, press/hold for 3 seconds, release for 3 seconds then press/hold for 3 seconds and release. All indicators on the console will be lit for 5 seconds with 88 showing in the Estimated Time Remaining two-digit display to indicate that the diagnostic mode has been entered successfully. If indicators do not display as described, the press/hold and release procedure may not have been performed within the time frame necessary for successful entry. Repeat the procedure and you may use another button to ensure this was not the cause.

The program then checks for saved fault codes. Post back any saved fault code for further advice. If there are no saved fault codes, all indicators on the console will momentarily turn off, then turn back on with 88 displayed and after 5 seconds, the diagnostic test begins with C0 displayed and the lid may be opened. Press the same button used in activating the diagnostic test above to advance through automatic test steps. Allow step C1 to complete before advancing to the next steps. Post back the result fro further troubleshooting advice.