How to Repair Christmas Tree Lights: Step-by-Step Instructions and Pictures

by Brett Martin
Find and replace burned-out Christmas tree bulbs using inexpensive testers and other techniques. Read an overview on how to repair christmas tree lights.
From The Family Handyman
How to Repair Christmas Tree Lights-Step 3
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Some testers work by having you slide each bulb through a hole. With other testers, you simply touch each bulb. You can test an entire strand in a few minutes. Sometimes you have two or more defective bulbs, so only identifying one bad bulb may not fix the problem.

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