Why is a Section of My Lights Not Working?
This symptom could mean a number of different problems. Firstly, you should check if the lights that are working are responsive to your commands. If not, it’s most likely due to the contact between the positive and ground wires. You should check every connection, as well as the terminated wire at the end of the lights. You’ll be able to see where the contact between the wires is. If possible, try to separate and/or insulate them. A bit of electrical tape should be enough. If you found the problem and successfully fixed it, all the lights should turn on and respond to your commands.
If the lights are still unresponsive, it’s possible that you have a bad light in your row. Check the first non-functioning bulb, as well as the last functioning bulb. If you can see any damage, replace the bulbs. Even if you didn’t see any issues, you should replace them anyway. The damage might not be visible to the naked eye.
If the lights respond to your commands, but not all of them light up, you may have set the length of the lights incorrectly. You’re supposed to mark how many feet of lighting you have. For example, if you have 30 feet of Christmas lighting, but you selected 10 as your length, only the first 10 feet will light up.