Thank you. I just learned to start at the selonoid and then back to the timer box. After first checking timer box, AC power to timer box and Transformer I then discovered the common wire had come loose from all valves. A 3 minute check at the valve end would have saved a lot of time and headache. Thanks for your informative lesson.👍
Great video, it helped me fix a short I caused by putting a stake in the ground that hit one of my sprinkler lines. It was easy once I tested the ohms at the controller and then the solenoid itself. Thanks for sharing.
Glad you added the It's probably bad over 60 / 70 otherwise didn't know. I have one valve at 37 and a toro at 55 (that is new but I suspect may be bad - need to test).
Couldn't you use a compass as a quick diagnosis tool to see if the solenoid is energising as when the coil is energised it will create a magnetic field pulling the needle on the compass in the direction of the coil. Maybe not as precise as a multimeter but it should tell you there's power there at the very least.
You're correct, he's checking the overall state of the solenoid by making sure the resistance of the unit is around 20, as expected. He isn't measuring voltage
