Any gardeners here? (Sprinkler system question)

[jrichrds]

My aunt left for 2 weeks, and came back to find her grass was yellow and the sprinklers weren't working anymore. I can't figure out what's wrong. She has 4 watering zones hooked up to a timer. And the timer works fine, but the water just dribbles out of the sprinkler heads.

What could have broke to cause the sprinkler heads in all the zones to fail?

 

[gooch]

If water is dribbling, then you are still getting water from the source, just not a lot of it. Each zone is controlled by a valve, which is of course controlled by the timing system. The source of the problem is probably before the valves. Maybe there is a clog somewhere preventing the water from flowing at the desired pressure.`