I would appreciate any advice on diagnosing and repairing a fairly simple issue. I have a three-conductor cable, directly buried partially under open ground and partially under stone pavers, from a timer to two valves approximately 150 ft away. Two of the conductors appear to be shorted together. I am reading 4 ohm from the one side and 4.5 ohm from the other side. Since I cannot easily examine the cable, especially under the stone pavers, I need an indirect method of finding the fault location. I understand that a ground fault locator and a time domain reflectometer may be useful, but I cannot seem to a find location that rents them.