Not sure about a video, but Google pop bumper rebuild and ignore everything except doing the lamp socket part.
You will notice on the new lamp socket there are some long metal leads. They route down through the middle of the pop bumper and are stapled to the underside of the playfield and have a wire soldered to each lead.
1. Remove the pop bumper cap.
2. Unsolder 2 leads under playfield.
3. Remove any staples holding lead to playfield.
4. Straighten lead so you can pull it through the pop bumper.
5. From the top, pull the lamp socket up and remove.
Reverse the procedure for installing the new one.