Troubleshooting Shredder Issues

Created by Lynn Shoop, Modified on Tue, Sep 16, 2025 at 2:54 PM by Lynn Shoop

PLEASE UNPLUG THE SHREDDER POWER PRIOR TO TROUBLESHOOTING

Step 1: Clear the jam and reset

Run the shredder in reverse. Many jams can be cleared by switching the shredder to reverse mode. Run it for several seconds to try and dislodge any paper.
Alternate forward and reverse. If the initial reverse attempt doesn't work, try switching back and forth between forward and reverse. The motion can work stubborn paper loose.
Try thick paper. If the reverse function is not enough, try using a rigid piece of cardstock, like a folded sheet of thick paper or a greeting card, to force the paper jam through.
Let it cool down. Overheating from a heavy workload can cause the motor to stop. Turn off and unplug the shredder for 20 to 30 minutes to allow the thermal protection to reset.

Step 2: Lubricate the blades

Lack of lubrication causes friction that can seize the blades and strain the motor, causing a high-pitched sound.

Use shredder oil or a lubricant sheet. Do not use aerosol lubricants or standard cooking oil, as they can cause damage.
Lubricate the blades. Apply the oil or run a lubricant sheet through the shredder. Follow up by running the shredder in reverse for a few seconds to help spread the oil over the cutting blades.

Step 3: Inspect and clean the sensors

Many modern shredders have a sensor that detects when paper is inserted. If the sensor is blocked, the blades may not engage.

Locate the sensor. The activation sensor is often in the center of the paper entry slot.
Clean the sensor. Use a cotton swab or a soft cloth to clean any dust, paper debris, or oil buildup from the sensor.

Step 4: Check for stripped gears

If you have tried all of the above steps and the shredder still makes a high-pitched sound without engaging the paper, the gears that drive the cutting blades may be stripped or worn out.

Inspect the gears. This usually requires opening the shredder housing. Look for any plastic gears that appear worn, broken, or misaligned.
Seek professional help or replace. Worn or broken gears are an internal mechanical failure that may require replacement. If the shredder is outside of its warranty, it may be more cost-effective to buy a new one.