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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon108
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Verified Reviews for Lighting Service pros in La Crescenta, CA

*The Angi rating for Lighting Service companies in La Crescenta, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Lighting Service needs.

*The HomeAdvisor rating for Lighting Service companies in La Crescenta, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Lighting Service needs.

Last update on December 22, 2025

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Lighting questions, answered by experts

Yes, most services include testing the system after repairs. Confirm with your provider.

If half of a string of Christmas lights is out, it is likely because of a single burned-out, loose, or broken bulb within that section. Long strands of lights often contain more than one circuit, so when one bulb fails, it can cause the entire circuit (or half the strand) to go dark. To fix this, inspect the unlit section and test each bulb to ensure it is tight and functioning properly. Replacing the faulty bulb or repairing a damaged shunt will typically solve the problem.

Testing tools, such as Christmas light testers, non-contact proximity electrical testers, and multimeters, all simplify the process of testing Christmas lights. However, without one or more of those tools, testing Christmas lights the old-fashioned way only works sometimes. Without testing tools, the simplest testing method is visual inspection, which may or may not yield positive results.

Cold weather can cause older incandescent Christmas lights to fail by causing cracks in the finish or the glass itself. Modern LED lights are affected in the opposite way and perform even better as the temperature drops. 

Simple repairs like replacing bulbs can be DIY projects, but professionals should handle significant electrical repairs to ensure safety and compliance with electrical standards.

The La Crescenta, CA homeowners’ guide to lighting services

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