Wayne- It's not always easy to find or recognize this sensor and from what I've checked, there isn't anything you "do" to it, but here's an idea...especially if you're technically or mechanically inclined. UNPLUG unit from AC power. Remove cover from unit and do a visual inspection...for mountain dew or any other substance. It would be best at this time to clean the video heads. Rubbing alcohol works fine, but never use a q-tip or anything that can "shed" fibers. You can find in most electronics shops, chamois tipped sticks that are excellent for this. Wet the tip and hold it lightly against the drum and spin the drum several times with your finger. This will remove anything clinging to the video head/drum. Also, on either side of drum, you will see black shiny vertical strips (there will be wires connected to the top of both) these are your erase & record heads. Give those a wipe with the chamois as well. Allow to air dry for a minute. That might actually be enough to clear the error from the sensor. Let me know how that works... Mo