Hi,

I just tried firing up my 4-zone, 7-year old sprinkler system, but
only ONE zone comes on. The others? I checked one of the other three
and did notice some water around the rotating heads, so it looks like
it tried to come up, but couldn't. I've been starting up my system
every year since it was installed and about the only repairs I've had
to do have been head replacements/adjustments. Any ideas on this
ONLY-ONE-ZONE-COMES-ON problem?

TIA,
Mr. Don't-Want-To-Pay-Astronomical-$$$-To-A-Repairman-If-I-Can-Avoid-It