Your garage door not working correctly can be traced back to many different causes. This video explains how to diagnose and possibly fix simple garage door problems in five steps. The first step is to check if your opener is plugged into the power. Sometimes this can get unplugged by mistake. Then check if the sensor is obstructed or misaligned. Video Source You can clean or move it around to possibly correct an unworking sensor. After this, check to see if the garage door is off track. An angled door means you could possibly have a snapped cable, which means…