Sears Garage Door Opener Won't Shut



Question:
There are a fair amount of spider webs in the corners, I didn't actually take the sensors apart and check the inside for spider webs. Maybe I will try that. The LED's remain on even if you put your foot in front of the sensors. Does anyone know if that is significant? I couldn't remember if they were supposed to change colors immediately upon seeing an obstruction.

Answer:
The photo-cells probably don't have anything to do w/ it. When they are not working the transmitters aren't supposed to close the door at all. As one of the other posters stated dis-connect the door & verify that the door works ok by hand. With the door fully closed manually, run the opener closed with the door disconnected. If the problem is still present it's in the opener. If the problem goes away the door is causing the problem. It's definitely not the down limit, but if the problem is in the opener I would suspect the problem is in the main logic board






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