Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Overhead chain drive starts then stops intermittent distances then power just goes off. tap the box and it will start again after pushing the button then stops again.Slowly getting worse.

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I would take the logic board out of the unit and look for loose or burnt connections on the printed circuit board especially around the small transformer.

Posted on Oct 08, 2009

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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IT JUST STARTED TO ACT UP. i WILL START TO GO UP 1 FT AND STOP AND YOU PUSH THE BUTTON AGAIN AND IT GOES DOWN. tHEN YOU TRY AGAIN, SOMETIMES 2-3 TIMES.


Un-hook the chain from the door, and see how hard it is to raise the door. It should be easy, not hard. If it's hard to open by hand, the opener won't do it, and will stop. You can adjust the springs to counterbalance the door so it's easy for the motor to lift it. You may need new springs.

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My vehicle toyota corona D4 egine 3s turns off while driving, please help know what could be the problem


my 2005 toyota caldina d4 engine shut off while driving, i change crank shaft sensor, fuel filter, injector driver, air sensor,

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1 Answer

Maytag Dryer won't start withouth me turning the drum.


Good day. Ugly problem.
My first choice would have been the motor, but.......
Here is the process, it might help you.
The power to the motor goes first to and thru the door switch. It then returns to the timer.
When the timer is turned to any running position, power leaves the timer where it is split into 2 leads.

One of the power leads goes directly to the centrifugal switch Which is the switch on the motor with all the wires. If you spin the drum, you also spin the motor, and if spun fast enough will close the contacts on the cetrifugal switch, thus sending power to the motor, allowing it to run. I guess you have done that.

The second lead out of the timer goes to the push to start switch, it then leaves and goes to the centrifugal switch but on the power side, so it is directly connected to the main winding in the motor.
That is why when you press the press to start switch, the motor runs, and if held in it will continue to run.
In fact, at this point, the motor had 2 sources of power, either of which can run the motor.
Thus releasing the push to start switch doesn't matter, since it runs off the other source.

Possibilities.
The centrifugal switch is not wired right. Please recheck. (or the motor was bad out of the box. Happens).
The push to start switch is bad, and needs replaced.
Or, the wiring going to or leaving the push to start switch has broken or making a bad connection.
Lastley, I said the power comes out of the timer and splits into 2 circuits. Not always true, in some models the timer sends 2 seperate wires out carrying the power, with the possibility the timer could be bad.

Hope this helps.
and thank for using FixYa

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Car dies intermittently


THIS ONE IS EASY. CHECK YOUR BATTERY TERMINALS AND CABLES THAT THEY ARE TIGHT. IF THEY ARE, YOUR BATTERY MAY NEED CHARGING OR YOUR ALTERNATOR IS NOT CHARGING YOUR SYSTEM THAT WELL. I WOULDNT DRIVE LONG DISTANCES UNLESS I HAD THAT CHECKED.

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Well where to start .....
This brand has a hell of a lot of quirks.
The first thing to try is this : With the power on at the wall and the machine off ,push and hold down the start button , then push and hold down the power button you may hear up to 3 beeps at this time (hold down the buttons for 5 seconds then release) turn machine off and turn it back on and just push start button.
What this does is re programes the computer ,then just leave machine to run cycle

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Unplug unit at power source and check and tighten all connections in the control box. And try this link.

http://www.garagedooropeners.us/technical_information.html

Mike

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Chamberlain Power Drive 1/2 HP - motor runs but does not move chain


I have the same problem. I just removed the cover and discovered a nylon gear had been worn out. I found lots of shavings inside the cover. The nylon gear is beneath the exterior chain gear. I am looking for information on how to replace it, if I can find the part. If you decide to look at yours, unplug the power and remove the sheet metal screws securing the bottom portion of the cener cover to the front and back covers. Then just remove the upper screws from the center cover. Good luck.

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