Recent content by fixingstill

Problem fixed. I believe it is my safety sensors. I cleaned them, redid the wiring connections, and re-aimed the sensors. When it is ten clicks, it is the sensors. This video is very helpful.

The symptom tells me the safely sensors not seeing each other randomly (or weakly) so I will check that first. When it is that close to outdoor and ground, the wiring / connection is prone to corrosion. I wonder how the sensor circuit works. 12V DC power powering up one sensor to shoot infrared...

10 light bulb flashes (or 9? hard to count) when it stops mid way when I am trying to close. The way they installed it, I can hardly access the adjustment knobs and I can't see the LED light (if any.) Oh, it is a 1246LM. Made in 1996 so it is 26 years old. The closest manual I can find is for...

Thanks for reading my post. No spider webs on the safety sensors. I also double checked the sensors. They are mounted tight and straight. I tested them by putting my hand in between them while door is coming down, it interrupts. I could manually lift and push the door closed and open with the...

All of sudden, my LiftMaster 1/3 garage door opener does not close. It would stop at random position, sometimes half way down, sometimes, 2 ft away from closing. Of course the first thing was to disengage the door and see if there is any binding, or track coming off. Everything looks good and...