Garage door openers have a reasonably long service life. As a result, homeowners often assume that there is no problem and do not perform regular maintenance and checks to ensure that the mechanism does not need to be repaired or replaced.Here are some slightly more subtle indicators indicating that it may be necessary to consider a replacement.Obvious indicatorIf, when trying to open your garage door, you hear a buzzing noise or a squeaky noise and the door refuses to open, this is a relatively visible sign that your garage door opener mechanism needs to be replaced.• But, before intervening prematurely and rushing into the first hardware store, use your DIY skills and check the bare gears.• A little trouble-shooting may save you the cost of a new door opener.Less obvious signs• Failure of the safety reversal: Since 1993, all manufacturers of a garage door opening mechanisms must include in their devices a safety reversal device. This feature uses two sensors located approximately six inches above ground level on either side of the door. These sensors are triggered by an object, a child or an animal when closing the garage door to immediately stop lowering the door and reverse the movement to lift it. If your current opening does not have this function or if it no longer works, it is strongly recommended to replace the mechanism.• Noise Control Failure: If you have ever noticed that your neighbors’ eyes are turning to you every time you open and close the garage door, or if your family complains that noise keeps them awake at night it may be time to replace the mechanism. The chain-driven opening model (resembling a bicycle chain near the engine) is the loudest. Replace with a belt drive or quieter screw to help your family sleep better at night.• Failure of security: Older models may also be more vulnerable to burglar intrusion. As a result, replacing them with a keypad template for entering a password can help deter burglars from attempting anything.• Keyless Remote Access: If you spend days trying to remember where you stored your keys, consider a password keypad on the outside of your garage door for component access. Simply a numeric code. Before replacing the current system, review the model you have. Older garage door openers do not offer the password keypad feature, but newer models only allow you to add it without changing the entire unit.Take advice from the manufacturer of your door opening mechanism before making a decision. New templates now save you from having to compose a well-defined code on the keyboard. Instead, they use fingerprint recognition technology to give you access to single tap on the console.