Sprinkler leaks basically seem to be as soggy spots, low drive, or bubbling at heads

https://zaneimjh927.publishlane.com/posts/how-to-detect-common-sprinkler-fixing-troubles-fast

Sprinkler leaks frequently show up as soggy spots, low drive, or bubbling at heads. Inspect risers, lateral strains, and valves, then fix cracked fittings to restore manner functionality.