symptom
Sander stops and restarts with the switch left at I
At no load, the sander cuts out and resumes even though the I/O switch remains at I.
What this symptom means
At no load, the sander cuts out and resumes even though the I/O switch remains at I.
Likely Root Causes
- Battery latch is not holding the pack firmly
- Contacts are dusty, worn, or heat-damaged
- Battery protection is opening intermittently
- Switch or electronic control fault
Quick Checks
- The tool runs continuously for at least one minute at no load.
Repair Preview
- Set the switch to O, remove and reinstall the battery, then pull-check the latch.
- - Inspect and dry-clean the rails and both contact sets
- Run at no load with a known-good pack and keep hands off the switch and dial.
- If stop-start motion repeats with a tight cool pack, remove it and use authorized service.
This is a preview of the troubleshooting guidance included in the full repair manual.
Related failure modes
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.
Related symptoms and error codes
Related models
Common symptoms
- No response when the switch is set to I
- On/off switch travel is blocked
- Powered motion continues after the switch is set to O
- Battery will not slide fully onto the tool rails
- Battery seats but will not latch
- Latched battery will not release
- Speed dial will not turn through its range
- Pad speed does not change across the dial range