When the lay-person typically sees a circuit board, they immediately seize up and think that's it's too advanced for them to fix. In reality, replacing circuit boards for the Chamberlain Liftmaster, Sears, and Craftsman garage door openers is relatively easy with proper instruction. This video will walk you through the process of replacing the circuit board on a Chamberlain Liftmaster, Sears, and Craftsman garage door opener.
When the lay-person typically sees a circuit board, they immediately seize up and think that's it's too advanced for them to fix. In reality, replacing circuit boards for the Chamberlain Liftmaster, Sears, and Craftsman garage door openers is relatively easy with proper instruction. This video will walk you through the process of replacing the circuit board on a Chamberlain Liftmaster, Sears, and Craftsman garage door opener.
Before your garage door decides to break down, it won’t check with your schedule first. Many of our locations offer emergency garage door repair service to help with those unexpected garage door repairs. Check with your local NationServe store for 24-hour appointment availability. Whether you need immediate assistance or an annual maintenance appointment, know that you can depend on our fast and reliable service.
The torsion springs on steel rolling doors work the same way as other torsion springs in the garage door industry. When the door is closed, the spring is wound. The spring is secured to a spring anchor bracket on one end and to the shaft on the other. When the steel rolling door opens, the spring in the barrel supports most of the door weight. The remainder of this weight is lifted by the chain hoist or the operator. 

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