iPad Pro Headphone Jacks
The iPad Pro 12.9" was announced on September 9th alongside the iPhone 6s and 6s Plus, and launched on November 11 of the same year. The 9.7" model was added in March 2016 and was replaced by the 10.5" model in June 2017.
Like most iPad tables the most common repairs for the various models of the iPad Pro are replacing a cracked front glass screen or a dead battery. The front glass panel of iPad Pro models is held to the case with strips of adhesive. Once the device is opened, this adhesive will need to be replaced.
Once you've bought your parts and tools, check out iFixit's iPad Pro repair guides for step-by-step instructions on how to make the fix.