Many do-it-yourself websites, such as iFixit and eHow, contain instructions on repairing or replacing broken HDMI ports. These sites can also be valuable resources for tracking down hard-to-find replacement parts or instructions on repairs that require advanced technical skills.
Repairing an HDMI port requires significant technological know-how. Replacing an HDMI port on a television, for example, requires a soldering iron and some familiarity with a motherboard. Sometimes a specific type of replacement HDMI port is required to fit a specific device. The forums on iFixit and eHow may provide the information needed to find required HDMI ports or other replacement parts.