Garage Door Opener

mangophillyMay 18, 2012

I have a Craftsman 139.53660SRT1 garage door opener. I bought it used. The button on the wall will open it, but when I go to close it, it goes about a foot, then reverses back to fully open. I have the sensors facing each other, but no green lights.

1. Do I need sensors for this unit to work, it was made in '98. The bulb flashes 5 times after it reverses back. Help please.

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don_1_2006

You must have sensors and they must be working for this opener to operate. Make sure the sensors are connected correctly. Did you get the owners manual? I think you will find the bulb flashes 10 times when the door reverses.

Check for 5vdc between terminals 2 and 3 on the rear of the motor unit. If there is no voltage or if it is greater than 6vdc the logic board is bad.

    Bookmark   May 18, 2012 at 4:04PM
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mangophilly

Thank you Don! I believe the sensors are bad, as there is no green light, and you are correct, the bulb flashes 10x.

    Bookmark   May 18, 2012 at 4:34PM
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mangophilly

Can I bypass those sensors? There are no children around.

    Bookmark   May 18, 2012 at 4:36PM
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mangophilly

There is 6.54vdc across terminals 2 and 3.

    Bookmark   May 18, 2012 at 5:18PM
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don_1_2006

There is no way to bypass the sensors. With 6.54 volts I have to think the logic board is bad. You need to try to get your money back. If you bought a logic board you will have as much in that opener as a new one costs.

    Bookmark   May 18, 2012 at 6:35PM
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mangophilly

Again thanks Don!

    Bookmark   May 19, 2012 at 9:48AM
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