Ok, I dont know if you have the manual or not, soClick HERE for one on line
I think the best thing to do at this point, is see if the opener will respond to programming.
You may have experienced a power surge and it could have damaged the logic board.
First, Page 22 of manual
Erase the open/close settings
Press and hold both of the "SET" buttons
( & ) together until the green indicator
light blinks (about 5 seconds).
2. All close and open travel limit settings are
erased. Then follow the steps on page 20 to
reprogram close and open travel limits.
Then on Page 20 see if you can set the open and close limits first starting with the open since the door is already closed and connected to the arm.
This should tell if the board is damaged and needs replacing if the opener will not respond to any of this.