I would do the following before ordering any more parts.

1. Clean out the drain pump and the drain hoses.

2. Check all of the wiring between the control board, pump, door lock assembly and motor control board. You are looking for a short, or bad insulation or some other problem.

Here is a service manual for your machine which is a Frigidaire. You may have to try replacing the speed control board but that would be on speculation, so try to check the easy stuff first.

http://frigidaireservicetips.co...rizontalAxisWasherSM.pdf