Did you follow the instructions that came with the part?
How long did you wait before you turned the knob?
Ok. Make sure the door is closed. Unplug the unit for 5 minutes. Plug it back in again and don't touch anything. Wait for a few minutes for 2 dashes or T01 to appear on the screen. You should be able to turn the knob slowly to choose your model and then follow the other instructions. Let me know if that works. If not, you may have to send the board back for another claiming it as DOA(dead on arrival).