I too had the problem where the shredder would only work in reverse. I unplugged the shredder. Using a flashlight, looking down in from the top, in the center of the slot where you insert the paper there is a little white tab/sensor. One single shred of paper was lodged behind that sensor. Using an straightened out paper clip bent so there was a hook on one end I was able to fish out that single shred of paper from behind the sensor. I plugged it back up. The machine now works perfectly. Hope this helps. Jeffrey
Jeffrey Jaggers/ ANTIQUENTUCKY on eBay, September 2012