Sears Garage Door Opener Won't Close

Old 09-21-04, 05:57 AM
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Sears Garage Door Opener Won't Close

I was wondering if anyone could give me some suggestions on this problem:

My garage door opener will open but not close. It will only close if you
hold your finger on the wall button the entire time. Otherwise it goes 2 inches down, then stops, backs up, and flashes the light bulbs on and off.

The infrared electronic "eyes" installed at the base of the door can see
each other ok, no obstructions, and both green led's are on.

I have oiled all hinges with WD-40 as the manual suggests.

I have tried increasing the downward force with the knob located on the unit
but same result even it I max it out. I've also tried adjusting the
downward limiter.

The door is aluminum, two car garage type.

This opener was new in August of 1995 and worked fine for 9 years, then
suddenly this cropped up.

I've seen other responses to this issue posted saying the door sensors are the culprit, but in my case both sensor lights are green. They stay green even if you put your foot in front, (should the color change if obstructed?)

Here is the specs on it:

Sears/Craftsman 1/2 HP
Volts: 120
Amp: 5.0
Hz: 60
Model: 139.536415RT
Chain Drive

Thanks for any help.

Old 10-05-04, 04:27 PM
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Can you open and close the door smoothly and easily by hand?? Note any binding or roughness. Could be bad bearings in the rollers. Also check chain tension, they will stretch over time.

I don't know about your opener, but with mine, the laser eye blinks when obstructed or not aligned, it does not change color.
Old 10-09-04, 10:51 PM
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In case anyone else has this problem, it turned out to be the safety IR eyes that were bad.

When I put my foot in front of the old eyes, the LED would stay green on both sensors. I ordered a replacement set and now the door works fine. One LED will turn off when obstructed now so I guess that's how it should behave.

Still this will be that last Sears GDO I'll buy. I don't think something like that should fail. It has no moving parts (in the sensor) and very low power running through it. Not to mention that the replacement was overpriced - $38 (shipped) for not much more that pieces of plastic with very simple circuit boards inside. I also read elsewhere on the web that this is a known issue with Sears/Craftsman GDO's. That the eyes just stop working sometimes.
Old 11-12-04, 11:21 AM
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I agree with you, Jimbo. Got a similar 1/2hp Crafstman opener and it has been giving me fits for 3 years, intermitently. Never again a Craftsman. $38 is expensive. A pair of industrial low voltage photo eyes that do the same thing and can withstand washdown conditions only run about $15-20.
Old 12-17-04, 07:05 PM
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Is there a "hack" to bypass those sensors? resistor or something....temporarily of course.

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