Question about Air Tools & Compressors
The fact that the light bulb blew very strongly leads me to believe that there is an electrical short with the opener and it is very possible that the logic board was damaged from the short. You will need to start by inspecting the wiring that goes to the light bulb socket. See if the wiring has melted and is shorting to ground. Is the light bulb socket housing loose? You can use a fluke meter to test the light bulb socket for correct voltage. Also check both legs of the wiring to the light bulb socket. You will need to find the short before replacing the logic board or you could damage the new one you install. the clicking sound you hear is for the relay that turns the light on and off when the opener is not operating properly. Let me know if you have other questions.
Posted on Nov 14, 2009
Hello pjjmartin. I have some experiance with garage door openers but not as much craftsman openers. It sounds like you blew the relay. Was the bulb you replaced the original bulb with rated higher than the original bulb? The relay works as follows. When you push the open button on the remote , a low voltage circuit usually 12 V (called the control circuit) closes and this creates a magnetic pull in a magnetic inductor. This pull closes the main circuit and allows the lights and motor to operate. The reason this is used is because the motors sometimes have a very high starting current which could not be handled directly by the components in the circuit board. If you open the plastic cover off you opener , there should be a circuit diagram on the inside of the cover showing you the position of the relay. It should look similar to this on the diagram : What normally happens is that the little plate in the relay that connects the main circuit burns into place as it makes contact. This will probably also blow your fuse , so replace the fuse too. The relays don't all look alike , but you should not have trouble spotting it as it is a big component normally with a clear plastic side. Replacing this relay should solve your problem. (Also remove and reinstall to test the connection before replacing). Most of the time you can simply pull the relay from it's holder and replace it. They cost about $10 - $20 dollars and be sure to replace it with the same rated relay. You can buy this at most big electronics and hardware stores. Sometimes it will be soldered into the circuit board and in this case you will need to unsolder it first. SAFETY WARNING : Always remove the plug from the unit before doing any work on it. If you need more information , please do not hesitate to contact me. Kind Regards Stephan
Posted on Nov 14, 2009
Ok, on your garage door.
The noise you hear is normal when the door sensor's are not seeing each other.
At the bottom of the garage door, on both sides, you should see 2 sensors. These are motion activated. Another words, if something go across the sensor while the door is closing, it will stop the door as a safety. Or in some doors, if the door is open and you walk by the sensor, the garage light will turn on.
If one on these sensor's are out of alignment, the door will not close and the clicking noise is the light relay, which is supposed to be blinking.
Look at the senor on either side and you should see a orange light on one side and a green light on the other side.
If the sensor's have been kicked or moved out of alignment, you will have to line them up until you have the above configuration.
You should not have to reset or remove any covers. Do not push the orange or green learn button, as that is not your problem and will not help the currant situation.
Also, you should only choose the most helpful technician as only one can receive credit for you problem.
Thanks, let me know if you need more information.
Posted on Nov 13, 2009
Either the door latch or a relay is bad. You can use an ohmmeter to test both.
Posted on Nov 13, 2009
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Posted on Jan 02, 2017
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