Shredder overload sensor activates at random - Royal VF1012mx Shredder

There could be several reasons why your LD100 shredder stops in the middle of shredding a sheet. Some possible causes include:

• Overheating: The motor of the shredder may be overheating, causing it to shut off as a safety measure. Allow the shredder to cool down before trying again.
• Paper jam: A paper jam may be causing the shredder to stop. Remove the jam and clear any debris from the shredder before trying again.
• Overloading: The shredder may be overloaded with too many sheets at once. Feed the sheets in one at a time to avoid overloading the shredder.
• Blocked cutting blades: The cutting blades may be blocked with debris, causing the shredder to stop. Clean the blades with a brush or compressed air and try again.
• Faulty motor: The motor may be faulty and need to be repaired or replaced.
• Power supply: Make sure the shredder is plugged in and that the outlet is providing power.

It's worth trying these solutions one by one and check if the shredder starts to work properly. If the problem persists, it would be best to contact the manufacturer's technical support for further assistance. They may have more specific troubleshooting steps to help you fix the issue.

There might be a tiny scrap of paper blocking the sensor, which will keep the motor running.

http://www.shreddingmachines.co.uk/faq.asp ..try this link it will give you loads of info on shredders and faults.

If the shredder is the kind that turns on when you insert paper, it may have an optical sensor that is dirty or blocked. Try blowing off the sensor with some canned air. The sensor is usually located in the center of the paper path slot. Also check that the bin is completely closed. Sometimes a tab on the door is bent or broken so that the shredder thinks the door is open. The tab activates a switch which tells the shredder that the door is safely closed. Fellowes has a lot of good tips on their website.

Check the Power Ensure that the shredder top is firmly placed in the shredder basket if the unit will not operate. If the top is not in place the feeder will not work and accept any paper. Make sure it is firmly plugged into the wall outlet and that the outlet is active. Rest the Shredder Let the shredder cool down if the shredder has been running continuously for a long time. It may have overheated and needs to be left in the off position for at least 30 minutes to reset. Verify the basket is empty or not too full as that will cause the shredder to deactivate. Clear Paper Jam Rotate the shredder into "Auto" and reverse to loosen any paper jam that is stopping the gears. Pull out any papers that are sticking out from the shredder feeder. If there is no progress then unplug the shredder and remove the shredder top from the bin. Turn it upside down and use tweezers to free any paper that is blocking the gear. Auto Mode Not Working Select the "Auto" option and feed paper into the center of the feeder tray if the shredder is only working in reverse mode. The sensor is located in the middle of the feeder tray and could be blocked by jammed paper. Use an index card to firmly unblock any paper that could be blocking the sensor.

Silverfox007:

There is a paper sensor at the throat of the machine that turns the machine on when it is activated by the paper when the paper is inserted. Something has happened to that sensor. Unplug the machine and remove the shredder head from the basket. Use a screwdriver to remove the screws at the bottom of the shredder head and open the shredder head. Look where the paper is fed into the machine and you will see the sensor. It may be unplugged/wire broken/sensor flag broken off... You'll know what to do when you identify the problem.

The optics are OK!
There is a small electromagnetic sensor on the cuttershaft which senses the input load.
I could be maladjusted or defective.

Have you looked for hidden staples in the machine. Sometimes they can be hard to spot.