A landscape sprinkler system can make life much easier since you won't have to worry about manually maintaining a watering schedule. This automation can be ruined, though, if one of your sprinkler heads isn't working properly. Most systems feature pop-up sprinkler heads that become virtually invisible when they are in operation. This can sometimes make it difficult to spot a problem until you have a dry spot in the yard. The following guide can help you troubleshoot why your sprinkler head is failing to pop-up.