While there are some minor maintenance tasks that homeowners can perform, it is generally not advisable to attempt major garage door repairs yourself. Garage doors are heavy, complex systems with various components, including springs and cables, which can be dangerous to handle without proper training and tools. It's best to leave significant repairs to professional technicians who have the expertise and experience to handle them safely. DIY attempts can lead to further damage, personal injury, or even property damage. Hiring a professional ensures the job is done correctly and guarantees your safety.