The answer to 'sprinkler system brown patches' is that brown patches in your lawn are a common issue with sprinkler systems. The most common causes are improper sprinkler head adjustment, broken or clogged sprinkler heads, and uneven water distribution. These problems can lead to dry, brown spots in your lawn that stand out from the rest of the healthy grass.
To troubleshoot and fix brown patches, start by inspecting your sprinkler heads. Look for any that are clogged, broken, or not properly adjusted to provide even coverage. You may need to clean or replace the heads. Also, check the system's water pressure and ensure the zones are balanced to distribute water evenly. If the issues persist, you may have an underlying problem with the sprinkler lines or valves that will require the attention of a professional landscaping technician.