In most cases, calling a garage door repair technician is necessary if you don’t know where to begin when it comes to fixing your garage door that would not open completely. But why not try to diagnose the problem on your own? The guide below will get you covered.
1. Test your door first and look for any signs of obstruction or resistance. Pay attention to the spot where it is stopping.
2. Examine and replace damaged rollers. This is one of the reasons why your door will stop short of fully opening. Make sure to lubricate the rusty rollers too. Other elements to check are the jams and tracks for they might also be causing the breakdown.
3. Move the up-limit switch closer to the motor unit. The motor will stop the door before it completely opens if the switch is too far away. If it has a broken tiny lever, you can repair or replace it.
It would be best to consult your instruction manual so you can make the troubleshooting quicker and easier.