Torsion spring is broken for our liftmaster 2265R model garage door opener and i need a new one where do you buy one?

Check for a broken torsion spring.

The Liftmaster openers have 4 movement switches, a )opening and b) closing limit and c) opening and d) closing force. First check the door for smooth operation by opening the door by hand (disconnect from the opener with the release cord). Any binding should be felt this way. It is possible for a binding hinge, roller or torsion springs to add too much drag and cause the force switch to shut off the motor. Hinges, roller shafts and torsion springs should be lubricated at least annually with a non oily spray (silicone or teflon spray). Not WD-40 or 3-in-1! A light band of lube should be applied to the torsion spring coils. If the door can be operated smoothly by hand, then adjust the closing force switch 1/4 turn at a time. This is a safety device do not use it to overcome another problem!

Sounds like it may be a broken spring. Look above the door at the coils on the steel rod and see if there is a separation of the torsion springs. Or if extension spring it will be hanging down on one side above the tracks. If it is a broken torsion spring I would advise calling someone with experience. If not what is the make and year of opener?

You need to give the proper model number. It is on the end of the motor unit closest to the door. Also the manufacturer.

I have recently had the same problem. I found one of the brackets on the garage door was broken. The broken piece which was hanging may have been interfeering with the traveling of the door. It was a diamond shapped bracket labeled N1. the door opens and closes, plus putting stress on the dootr. works fine now, i am in the process as we speak to find a replacement bracket. It was driving me crazy. The door would open fine, but when closing it would stop then go back up, the light would flash. Check all yhe brackets on the garage door itself.

Replacement of both springs is recommended.

This is something you should no try yourself. It can be very dangerous. I wouldn't even do it. Call in an expert.

You could have a broken door spring or the drive gear is going bad. You need to remove the cover to check the gear. It is white nylon and is just in front of the motor. You can also increase the 'up force' which is a control on the rear of the motor unit.

call an overhead door company. the springs are under high tension. Better safe than sorry.

You have not wound the spring correctly or have the wrong size spring