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Hey y'all, I have a Liftmaster 8500 giving me some trouble. It's been in use about 15 months. Previously it wouldn't shut and it just seemed like a force/limit reset was needed. At the time it was late at night and the wife and I had just returned home - I decided to pull the release rope...

Relatively new garage owner here - very little experience in working on or troubleshooting these things. I have a Liftmaster 8500 that's been in use a little over a year. A few days ago it started reversing and is giving me the 9 LED blink indicating an issue with the Cable Tension Monitor. When...