The answer to 'sewer camera inspection not working' is that there are several common causes, including a faulty camera, damaged cable, power supply issues, or blockages in the sewer line. Symptoms may include the camera not turning on, the image being blurry or distorted, or the camera getting stuck in the pipe.
For simple issues like a loose connection or power supply problem, you may be able to troubleshoot and fix it yourself. However, if the camera or cable is damaged, or there is a blockage in the sewer line, it's best to call in a professional plumber who has the right equipment and expertise to properly diagnose and repair the problem.