Question edited for a bit more clarity. It is a SPL S242D, not 2420. Question moved to a better category. Duplicate post deleted. Refresh page to see your question. Please don't type in all CAPS, it is considered SHOUTING and is harder to read. Take the bin out. Lay it on its back. Use a vacuum cleaner with the round brush attachment to vacuum out all the dust playing particular attention to the sensor in the upper section. Put the bin back in with it lying down and gently sit it back upright. It should work now.https://www.google.com/search?q=SPL+S242D+SHREDDER%2C+open+door+light
