Yohai Rubin: One of the most common issues in the garage door system is misalignment or obstruction of the safety sensors. The first thing you wanna check is the alignment of the safety sensors. You wanna make sure there is nothing on the way. When the door gonna go down, then it pops back, in the majority of the cases, it's means that the safety sensor, either misaligned or there is something on the way. So you wanna check it out.
When you choose a garage door contractor, you must make sure about three things. Number one: how legit they are. If they have license, bond and insurance. That's important. Number two: check out the reviews, the pictures online, see what people think about them, see the quality of their work. And number three: check out about the material, about the quality of the material. And that's gonna save a lot of money in the long term.
To ensure the safety of the system and to preserve the functionality of the door, it's highly recommended to service the door annually. Tune up, maintenance and lubrication. Lubrication you can do at home. You just have to lubricate all the moving parts and the springs as well using a silicone-based lube.