Scrap-n-Repair: HP Deskjet 3635 Paper Feeding Problem - Replacing or fixing pickup roller 

Found this HP printer from de-trash. Tested with a paper feeding problem. This is a guide on how to replace a pick-up roller or alternative to fix the paper feeding problem on an HP deskjet 3635 printer scanner.
Tools and parts required:
-Pickup roller GT5810 GT5820
-screwdriver
-Hex screwdrivers
-alcohol
-rags
-sandpaper
-masking tape