Remove the logic board from the frame.

If the logic board doesn't easily lift out of the frame, apply a few more drops of isopropyl alcohol to any stuck areas and use an opening pick to cut through more of the adhesive.

If there's any alcohol solution remaining in the device, carefully wipe it off or allow it to air dry before installing your logic board.

During reassembly, follow this guide if you are using a pre-cut adhesive card to secure the logic board to the frame.