Dead WP DW
Hi John, thanks for the model #, This DW does not use an external TF, it is built into the main control board.
Try turning off the breaker for 10 minutes, if that does not help confirm that the power connections in the junction box are good and that power is actually getting that far.
Other than these items it could have a bad control board, unfortunately the board lists for around $175, Sorry I though this DW still had an external TF which was a very common problem.
John L.