I had the same issue happen to me. I brought it to a Mac repair shop and they made the cheap fix for me by taping it down in place. The keyboard works fine now but God knows for how long. Atleast i know the issue and they did say the correct fix would be to replace the logic board. I can't see how someone can't figure out how to take just the clamp from an old top case and insert it in it's place. This would be the best and cheapest adn most secure fix but not sure if the clamp is really attached to the cable insert from the manufacturer. Suggestions or comments about reinserting the clamp if you have one?