Use a screwdriver or piece of metal to short across the legs of the old capacitors, while they are still in the board. This will "short out" any remaining power left in them so they don't spark or shock you while you do the repair.

Using a soldering iron, remove the old capacitors. Then solder in the new ones.

Replace the board and screw it into place.

Replace all the cables that you removed.

If you feel brave, you may want to test the display before putting the plastic back on.