I turned on my lawn sprinkler system for the first time this year and
found one of the zones is leaking -- there is a puddle in my lawn.
The rest of zones are working fine. I dug the lawn up near the puddle
area and could see water gushing out from the black sprinkler tubing .
There's no fittings visible near that area as far as I could tell.

My question is: What are my repair options? Anyway to do this
myself? Thanks,
James