Model GLWN5250D0WWStart button blinks only and will not start any cycle. I have unplugged it for 10 mins, checked the door magnet, checked the drain line (free of obstructions), held the start button for 10 seconds. No luck, it will not drain or start any other cycle. It's like the control board thinks there's a problem (and maybe there is) but I don't see any. Are there any board reset sequences or way to get an error code or something? Thanks!