Royal Office Equipment & Supplies - Page 4 - Recent Questions, Troubleshooting & Support

Use a large O ring sometime two of them of the right size. It will work.

I just had this exact problem with my shredder. I found that the LM324 IC on the circuit board was shorted out, and it tool the LM7812 regulator with it. I replace both and it's good as new.

The continuous running tends to be that the sensor that detects that there is material still to be shredded is either dirty or has some paper stuck in front of it.

Has it got too hot

That would be the part number.

It is hard to tell what is causing this but a few things to could be a loose universal bar, the trip adjustment, or something foreign in the typewriter stopping the movement of those keys