Your landscape lighting looked incredible the day it went in. A few years later, half the path lights are dim. One uplight flickers on and off. The fixture by the fence hasn’t turned on since spring. If that sounds familiar, you’re due for some landscape lighting maintenance. Most issues trace back to a handful of causes, and none of them require replacing the whole system.
Voltage drop. The farther a fixture sits from the transformer, the more power it loses along the wire. That’s why lights at the end of a run often look dimmer than the ones near the house. The fix is usually a heavier gauge wire, a multi-tap transformer, or a shorter run. Rather than guess, run the numbers with FX Luminaire’s voltage drop calculator.
A tired or undersized transformer. Transformers weaken with age. Systems also grow over the years, a few extra path lights here, an uplight there. They can outgrow the transformer powering them. A good rule of thumb: keep the total fixture load under about 80% of the transformer’s rated capacity. A 300-watt transformer, for example, should power around 240 watts of fixtures, not the full 300. Dim lights across the whole yard, rather than just at the ends, usually point here. Alliance Outdoor Lighting’s guide to sizing a transformer walks through the math in more detail.
Water in the connections. Northern California’s rainy winters are hard on wire connectors that weren’t sealed properly. Corrosion inside a connector is a common cause of a single dead fixture. Usually, the rest of the system keeps running fine.
Buried or damaged wire. Irrigation work, planting, or aerating can nick a lighting wire. Nobody notices until a section of the yard goes dark.
Foliage and grime. Sometimes the fixture is working just fine. It’s just buried in mulch, dirty, or blocked by a plant that’s grown in over a couple of seasons.
Voltage drop calculations, transformer sizing, and tracking down a cut wire are where most DIY fixes stall out. For contractors, offering landscape lighting maintenance is also a natural add-on for existing accounts. A system that’s already installed rarely needs more than the right parts and an hour of troubleshooting.
How often should I do landscape lighting maintenance? Walk the system once a season. Take a closer look each fall, when daylight saving time shifts your timer schedule. In Northern California, right after the rainy season is a good time to check connectors, too. That single seasonal habit catches most landscape lighting maintenance issues before they turn into a dead fixture.
Why did all my landscape lights get dim at the same time? That points to the transformer rather than the fixtures; either it’s aging, or the system has outgrown its capacity. A single dim fixture usually means a local problem; the whole yard dimming at once usually means the power source.
Why is only one landscape light not working? A single dead fixture usually points to a local problem, not the whole system. Common culprits include a burnt-out lamp, a corroded connector, or a nicked wire. The transformer and the rest of the system are typically fine.
Will switching to LED lamps fix voltage drop? LED lamps draw less power than halogen. Switching can ease voltage drop on a long run, but it won’t eliminate it. Wire gauge and distance from the transformer still matter, so it’s worth running the numbers even after an LED upgrade.
Whether you’re chasing one dark fixture or auditing a system that’s a few years old, we can help. Our stores stock the transformers, wire, and connectors from top professional-grade vendors to fix it right. Shop our landscape lighting selection or stop by any Bay Area location.
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