Too many Christmas lights may paralyze your WiFi, but here's how to fix it | PBS NewsHour
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Troubleshooting Christmas Lights — 1000Bulbs.com Blog
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electrical - Why are half my Christmas lights not turning on? - Home Improvement Stack Exchange
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How to Fix Broken Christmas Lights Faster with a Lighter « Christmas Ideas :: WonderHowTo
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Broken Christmas lights: How to fix bulbs and strands that don't light