During reassembly, perform the following:

Make sure all 18 connectors are above the logic board before securing it back into the frame.

If you're having trouble positioning the connectors, use tape to keep them out of the way.

Hold the rubber spacers out of the way so the fins can drop into their recesses.

When reinstalling the logic board, insert the left side first to reposition the HMDI and SDXC ports.

Use your fingers to slightly compress the HDMI port to fit it into its recess. Otherwise, the logic board won't sit correctly.