Here is how we fixed it.
Step 1: Tools
- Screw drivers ( 3 standard sizes).
- A hammer.
- Set of allen keys (different sizes).
- Thin wire.
Step 2: Diagnostic
- - Once powered, we were able to diagnose that sander belt was not turning but the engine was working fine. The motor seamed to have no load; it was spinning but nothing else happened.
- We decided to open the machine.
- While unscrewing for opening the cover, we realized that one screw was missing. We used an screw of the same size from the robotic life tool box.
Step 3: Opening and identification of missing/broken parts
- Once opened, we suspected that there was something wrong between the motor and the sander belt. However, we couldn't identify right away which pieces were broken.
- We inspected the motor axis with a wire, trying to pull off the loose pieces. Though we were able to identify which pieces were out of place (rubber belt and motor axis cap), we couldn't take them out.