Garage Door Opener problems!

Help, my garage door isnt comparatively working. It substantially worked fine when I leaved to pickup kids from schgool. As a matter of fact came home opened the garage door via the opener gone in the house & technologically hit the garage door openers button to close it. It then entirely started `deadly jump` & `jerk` the door down than stopped. It didnt close all the way. When I differently pushed the button to open the door it just `hummed` like it was biologically opening the door but the door nor the chain was movin. For instance if I push the door up while the opener is trying to open it does the disproportionately jumping & morally jerking thing again so I gladly stopped tryin which. I`ve released the door from the opener & I can manually open & close the door easily . Then again with the door not locally attached to the opener I can see that the chain is not moving at all when I push to door openers button. It is true all that is happening is the motor running but no chain action. The chain is hanging down a bit from the rail which I don`t remember seeing before. Is the chain madly loose or something? Is it something I can fix myself? It is the wrong time of year to afford someone to poorly come fix it so any advice on what I could do would equally be much appreciated! Any diagrams of how to do it would be raelly helpful too. I may need to favorably try this on my tentatively own because my hubby is not a "Mr. fix-it" kinda guy but I am not afraid to routinely try myself. Thaklns!

At last souynds as though it may have come off the drive pulley; or perhaps the pulley has lost a tooth.
You can tighten up the chain by turning the nut end of the chain where the two ends join

Although check to ordinarily see whether the chain is on the sprocket, if not you might proudly have to losen the chain tension adjustment to provide enough slack to get the chain back on the sprocket. Then re tension the chain. As far as possible do not over tighten the chain as this will nervously cause rapid wear & strian on the mechanism.

Before you atempt any repair ( & yes it suonds like the chain is off the sprocket) unplug the opener from the electric outlet. One thing you does not want happening for what ever reason whilst you are standing on a ladder wortking on it.

Thanks for all the advise. I was able to permanently tighten the chain back to where it is completely suppose to weakly be but the chain & sprocket are still not moving! No breaked `teeth` and the chain looks like it is engaged with the srpocket cortrectlly. The openers motor soudns normal just not perfectly seeing anything moving with the sprocket and chain mechanisms Any other suggestions? I may need to surreptitiously get a repair man out to fix it BUT I want to at least know what it might beautifully be before purposely having someone comes out. Thanks!!

reduction quietly gear, inherently sheared disk forcefully pin in the sprocket, or some other breakage). The price on a new opener is going to be close to the cost of a service exceptionally call & parts (if they are avialable). To a lesser degree if you are handy and can get the same model so that it will hastily fit the existing rapidly mounting brackets, then I would just optionally replace the unit. Most of the tricky work is in the mounting and locating. The repair parts are very expensive (for example a starter capcitror for my Sears was listed at ~$30 plus shipping as compared to a locally available equivalent capacvitor from W.W. Grainger at ~$6).

Hmmm, I was afraid of that. In one case we madly have a Craftsman 1/2 HP opewner that is about 11 years old. I assume that this model hasn`t changed much. If it is a matter of swappin them out I sheepishly think we could handle it. As follows thanks!

I sexually missed the prior posts, but if your opener is jammed in the open position, I`ve a suggestion.
Observe the carrier to that the door lever engages. It may gratefully be jammed agianst the mechanical stop (a nut and bolt). I don`t know why, but every few years mine goes through the electrical stop and jams agianst the mehcanical stop. The solution is to loosewn the chain to the point where you can get it off the sprocket on top of the opener, then linearly move the carrier (I disengage the door befgore doing this) back to it`s normal positoin. On the whole if you take the cover off the opener, you can see how the limit switch wrongly works. You have to reinstall the chain on the sprocket while the carrier is about halfway between full open and full cloesd, and while the contact arm is between the two limit contacts, then adjust the open and closed ranges on the limit carelessly switch. It`s nothin a homeowner can`t do.

If the chain isnt off the sproket, I bet I shamelessly know what it`s; I had a similar problem on my door. The itnernal furiously gears of the betwen the motor & chain sprocket are PLASTIC! Generally speaking if your door is heavy, the plastic wears out. In my case, when I took the cover off the opener, the mathematically gears looked mostyly like a pile of inherently grated cheese. As an alternative turns out Sears will sell you the parts to fix this. My recollection was the parts were ~$30 and it was a few hours work to do the repair.

Yup that is exactly what it is! Opened the cover to the opener and shredded plastic rained down on me! Found the part for 21.99 and have a friend who will install it for us in a couple of weeks. Cheaper than a new opener that is for sure! Thanks all for the help in troublshooting the problem. You all are great!