Sprinkler leaks usally seem to be as soggy spots, low drive, or effervescent at heads
https://thoughtminty.com/s/MABmxzTSg37SW0FC-2oj_
Sprinkler leaks characteristically show up as soggy spots, low stress, or effervescent at heads. Inspect risers, lateral traces, and valves, then fix cracked fittings to fix technique functionality.