Sidewalk sprinklers in front of front yard with retaining walls
I have a retaining wall in my front yard, it raises 3 feet above the sidewalk. The sprinklers on the sidewalk is not working. How do I figure out which part of the system fail with all the concrete on the sidewalk, the retaining wall and the 30 feet of lawn from the valve to the retaining wall? If the pipes underneath the sidewalk or the section buried underneath the front yard and the retaining wall is broken, how do I go about fixing it? Is there a way to install a new sprinkler system without breaking the retaining wall? Do I have to dig down from thge front yard to reach the same level as the pavement before I tunnel through the sidewalk? Is there an easier way to fix this? How much would you think it will cost?