I Fixed it!!! Ok… I’ve had my B&D Pivot PD600 for a couple of years and used it several times with no issues. Suddenly it stoped doing the reverse; it will drive forward but won’t go in reverse. I did a google search and found this forum… so I posted my issue… and decided to open it up to see if I could spit something so I took it a part by removing screws from top side where the bits go in and loosened the tensing screws while keeping them in their holes so they don’t get lost… after I opened the unit I checked the switch and sure enough I saw some discoloration on one side of the solder line on the PCB under the reverse switch button the solder line was broken and open (checked via ohmmeter). I tested it by touching the broken gap with a small flathead screwdriver and the reverse worked! Do this was the cause of the issue. So I used a bare wire and soldered it on both sides as a bridge connecting the line back together. Tested the switch and both forward and reverse are working as they should....