Hooray, it works! Wish I could say that for my issue here (water hammer) but I'll get around to it soon.
With a situation like this a good thing to ask yourself is how old are the other valves? Same vintage and model? Sometimes it may be worth to do preventive replacements on the others as well, especially in case the old plunger/spring assembly was quite corroded. If a valve remains open and you aren't home that may not be cool. We had it happen about a month ago but luckily we were home. My wife noticed a serious lack of water pressure and then I saw that the zone that was running two hours ago when I got the newspaper was still running ...
Well, at least now you have a new tool, the multimeter. Those come in really handy if something else croaks. A light on the car quit, doorbell doesn't work, check if there is juice left in a battery, not enough signal from the TV coax, a telephone is dead and so on. It's easy to obtain learning hints on the web, just be careful and stay away from 120V or 240V mains wiring.
Regards, Joerg