garage door opener help

[bls2dpj]

I need a little help with my garage door/opener. When I push the button to close the door, it can be on the remote or the buttons mounted on the wall, the door goes down about 1 foot then stops and goes back up. It has the safety sensors at the floor level but these are not the issues because when they have been tripped the light on the opener flashes to indicate a problem. And it does not flash when this happens. Its almost like the button gets pushed again causing the door to go back up.

The only way I can get the door to close is to push the button multiple times. I was wondering if maybe the receiver is going bad. Its a chamberlain brand. Just wanted to get some opinions before I buy another receiver.

Daniel

 

[neverenoughtools]

Have you tried readjusting the closing force limiter?

 

[Rich T]

It still could be the sensors,Had a buddy buy a new opener for the same reason. left the old sensors on the door and still had the same problem, he had to put the new sensors on the door for it to work right. ( turns out the old opener was still good just bad safety sensors on the door rails)

 

[Hannibal Hector]

I had somewhat of the same issue, however mine would close 3/4 down then went back up. I thought the sensors were bad too, nope that was not it. If the sensors get activated the light will blink 4 times indicating an obstruction.

I disconnected the door from the lifting mechanism and I manually opened and shut the bog door. I found a spot where there was increased resistance on the rollers in the rails at the point where it opened back up.

I did a little "mechanical" adjustment and sprayed silicon on rollers and rails. problem solved.

Hope yours is as easy a fix as mine was...

 

[bls2dpj]

Update...I have adjusted just about everything I can find on this opener. I even swapped the tracks for the rollers and it still does the same thing. I'm going to try to bypass the safety sensors just to test them and see if they are the problem. I just have no clue what to check next. Thanks for all the input...any other ideas????

Daniel

 

[scott37300]

Are there any spots of resistance when you raise or close the door without the opener? You said you replaced the tracks and rollers?

There should be an adjustment on the opener that adjust how much resistance the opener can handle before it reverses. This is another safety feature in case something is under the door but the safety beams miss it. Try setting this higher.

Also check your limit switches if you have them, they will be on the rail going from the opener to the door. If yours has them there will be a switch on each end that tells the opener when to stop. See if these moved or something.

 

[LEVE]

You can't bypass the sensor... unless you're a great electronics wizard. What type of GDO is it, make/model?

Have you taken the load of the door off the rail to see if the GDO works?

Have you looked at the limiting switches in the GDO? They look something like this, on a Craftsman or a Liftmaster GDO:

Have you checked the circuit board for cold solder joints?

 

[bls2dpj]

You can't bypass the sensor... unless you're a great electronics wizard. What type of GDO is it, make/model?

Have you taken the load of the door off the rail to see if the GDO works?

Have you looked at the limiting switches in the GDO? They look something like this, on a Craftsman or a Liftmaster GDO:

Have you checked the circuit board for cold solder joints?

Its a chamberlain opener. I have taken the door off and it works fine without the door attached..once the door is attached to the opener it goes back to doing the same thing. I'll double check the circuit board. It does not have limiting switches that I can see. There is one spot that is a little rough, I've tried to smooth it out but it didn't seem to help.

Daniel

 

[LEVE]

Chamberlain is very similar to Craftsman GDO systems. Unless you take off the GDO shroud you'll not see these switches. The plastic Screws you see on the left of the pictures should be mounted on the left side of the GDO (viewed from the back of the GDO) behind the shroud with screwdriver holes to access and turn them. That sets the up and down limits.

Before you start taking stuff apart, try (with the door load off the GDO) to work the GDO while tapping on the GDO housing and see if things change. If tapping changes things, then the circuit boar may have a cold solder joint.

 

[Rich T]

pull the cover off and check the nylon gears that run the chain, If they are going bad it will also hang the door up. If you have a lot of shavings in there i would buy a gear kit and change it.