Tips for performing repairs on a LiftMaster garage door system include using the company's support site to troubleshoot the issue according to symptoms, disconnecting the system's power supply to avoid damage and using only compatible parts for replacements. LiftMaster.com also features several instructional videos that explain the specific steps for completing certain repairs, as of 2015.
Begin the repair process by identifying the main symptom, such as the door failing to open or the dome light flickering while on, and examining the complete system to determine the potential causes. Check the online help articles on the LiftMaster support site to learn about different areas to check and potential solutions, such as locating debris blocking the door arms and preventing normal movement. If an extensive repair is necessary, clear out the garage and the surround area to avoid causing damage to the system or the space and its contents.
It may be necessary to disconnect the power supply from the control system for some repairs, as this removes the risk of electrocution or inadvertently engaging the system in an incomplete form. When choosing replacement parts, focus on official LiftMaster components to ensure compatibility with the current system, as third-party parts may cause damage or other issues. It may also help to watch the LiftMaster repair videos to identify specific techniques for handling different components and learn various tests to perform throughout the process.