Chosen Solution
I just replaced the logic board on my MacBook Pro 15" Unibody. I was extremely careful, and everything works fine, but the keyboard. The 3, e, d, and c keys do not work. I removed the plug for the keyboard and reinserted it but still no go. What can I look to do?
It is not possible to repair the keyboards. You need to buy and install a new keyboard. You can see how to change it from here
