When your garage door refuses to open or close it can be because of many different issues whether it’s stuck halfway or unexpectedly stays open, there are quite few possible reasons for this to happen, but most common issues are related with the garage door opener. While sometimes the fix is simple like reconnecting the power supply, in other cases it may be required to replace the entire opener.
If your garage door opener isn’t working you can go through some simple steps to figure out what’s wrong and by following these steps you can tell what is the problem:
Check the power supply
Make sure the garage door opener has a steady power supply. Check for any burned fuses that could be the problem. Look for signs that the opener is getting power like if its light is turning on. Many modern garages have a GFCI outlet on the back wall and if it has tripped that is the problem.

Examine the opener trolley
Check if the trolley is locked in place because if it’s not, the garage door won’t open even if there is power.
Make a visual inspection
A visual inspection is always the best way to find the problem, check the opener for loose wires, damaged parts or signs of burned components.
Battery Backup
If you hear a beeping sound it might mean there is a problem with the power source and that the battery backup is running low and can not handle the opener anymore.

Remote Issues
Try to open the door using the remote control to see if the issue is between the wall mount button or it is more complicated.
If this basic troubleshooting steps don’t solve the issue, it’s time to call a qualified garage door repair company. Trying to repair a garage door without the proper skills or knowledge can be very dangerous and in most of the cases it will end up with injuries and further damage to the system. A professional technician can inspect your system and diagnose the problem faster and in a more accurate way.