Aqueduct at a glance
- Serving Nashville and Middle Tennessee since 1988
- Licensed, bonded and insured, locally owned and operated
- Irrigation design, installation, activation, repair, winterization, backflow testing, coverage audits and pump service
- Landscape lighting design, installation, repair and Christmas light installation
- Service area covers Davidson, Williamson, Sumner and Cheatham counties
Read the pattern before you touch anything
A low-voltage landscape lighting system is simple: a transformer, a timer or photocell, cable runs and fixtures. That simplicity means the way a system fails is diagnostic. Before calling for repair, walk the property after dark and note exactly which lights are affected. The answer usually falls into one of six patterns.
Six failures and their usual causes
- Everything is dark. Start at the transformer. Check the GFCI outlet it plugs into (a tripped GFCI after a storm is the single most common cause), then the timer or photocell. Nashville power flickers can reset digital timers, and a photocell covered by mulch or a growing shrub thinks it is always daytime.
- One whole section is dark. A single cable run has failed. Usually a cut from an edger, aerator or a new planting bed, or a failed connection at the start of the run.
- One fixture is dark. Lamp failure, a corroded socket, or a bad connection at that fixture. Even LED lamps eventually burn out.
- Lights get dimmer toward the end of a run. Voltage drop. Either the run is too long for its wire gauge, or fixtures were added to an existing run without rebalancing. Common after DIY extensions.
- Lights flicker or come and go. Loose or corroded connections. Moisture gets into poor-quality splices, especially in Middle Tennessee clay that stays wet for days after rain.
- The lights work but look wrong. Fixtures knocked out of aim by mowers, foot traffic or ground settling, lenses fogged with mineral deposits, or plants grown across the beam.
What is safe to fix yourself
Some checks are entirely reasonable for a homeowner:
- Reset the GFCI outlet feeding the transformer.
- Check and reset the timer, and clear anything covering the photocell.
- Wipe lenses and pull back mulch or foliage covering a fixture.
- Swap a lamp in a single dark fixture with an identical replacement.
Beyond that, bring in a technician. Digging for a cable fault without knowing the layout risks cutting a second line, often an irrigation lateral. Adding fixtures or splicing cable without measuring voltage tends to create the dimming and flicker problems above. And anything inside the transformer housing involves household current on the primary side.
What a professional repair visit covers
Aqueduct Irrigation / Southern Light runs landscape lighting service, repair and maintenance out of a staffed Nashville office, and its published approach is a useful benchmark for what to expect from any repair provider:
- Any brand, any installer. Its technicians service all major brands, including systems installed by other contractors.
- Stocked trucks. Service vehicles are GPS-located, routed and radio-dispatched, and carry the parts and tools to finish most repairs on the first visit.
- Transformer and wiring checks. Transformers are inspected inside and out for debris and corrosion, connections are cleared and secured, and exposed wiring is checked and reburied.
- Lamp replacement and re-aiming. Burned-out lamps replaced and fixtures adjusted after settling or bumps.
- Warranty. Repairs use contractor-grade products and carry a full one-year warranty on parts and labor, with manufacturer warranties varying by equipment.
Low employee turnover means the technician who comes back is often one who has already worked on your system, which shortens diagnosis on the next visit.
Repair or upgrade?
If a system is still running halogen lamps and failures are becoming frequent, a repair visit is a good moment to ask about LED conversion. LED fixtures use less power, run cooler and last far longer; Southern Light puts the energy saving at 80 to 85 percent compared with halogen. Cable and transformers in good condition can often be kept.
If repairs keep recurring on the same system, the better fix is usually scheduled maintenance rather than repeated service calls. Two walkthroughs a year catch exposed wiring, corrosion and drifting aim before they become failures.