I serviced this NordicTrack T5.3 in South Berwick, Maine. The customer had determined on his own that the motor control board was bad and had ordered a new one and installed it himself. The MCB failed.
They sent him another MCB and suggested that he have a tech install the new board, so he called me. Again we had another bad board.
After doing some testing I suggested that he return both bad motor control boards to the supplier and I would repair the original MCB. The customer agreed and that is in process as of this post.
I am finding that overall we are better off to repair any bad motor control boards rather than buying a new one, which is also usually less expensive as well.