The answer to 'repiping not working' is that there are several common causes for a repipe not working properly, including improper installation, leaks, low water pressure, and clogged pipes. Symptoms may include water leaks, slow draining sinks, discolored water, and reduced water flow.
To troubleshoot, start by checking for any visible leaks or water damage. If the repipe was recently completed, it's possible the new pipes were not installed correctly. You may also have underlying issues like mineral buildup or corrosion in the old plumbing system. In some cases, the repipe itself may have been done incorrectly. If you're unable to identify and fix the problem, it's best to call in a professional plumber to assess the situation and make the necessary repairs.