Flooded valve box
My wife and I recently bought our first house. I'm learning everything from scratch and sprinkler systems have been an issue. In the back yard we had a broken pop up sprinkler head. So I replaced that and we found that all the sprinkler heads after that were burried or grown over so the whole area wasn't being watered correctly. After much work we have gotten most of the sprinkler heads working correctly but the last two on the line will not pop up. Now, I can't tell if it's a water pressure issue or an issue with the pipe (I replaced the sprinkler heads on those spots and the part that pops up seemed tight on those two spots for whatever reason).
The reason I suspect a pressure problem is that I took a head off and let the water flow to get out some dirt in the line and the water only popped up about 4 or 5 inches. Secondly the sprinkler valve box in the back yard gets flooded every time the sprinklers turn on. This is where I think the problem is. How can I tell if the valve is bad or something else is going on? I took off the valve cover and there is literally inches of water with wires in the box. Seeing wires and water together can't be good right?