Just a heads up, I did the repair without removing the screen, just carefully opened it and laid it back. I did however remove the battery cable before I did anything further. Saved a bunch of time by starting at step 20 (after the battery cable). Hope this helps.
Last step needed. Once board is free and you can see the battery hidden in the back, very easy to remove. Great guide!
Stopped here, once the logic board was free, I could just simply get to the battery
didn't need to do this