Instructables
Picture of LED Christmas Light Repair
Christmas lights are a real nuisance to repair.  The hard part is finding the bulb that is burnt out and most people do this by trial and error.  If you have a string of LED lights that are of the non-replaceable type you may think all is lost.  But don't be too hasty.  What if you could find the problem LED and then repair the string.  Let me illuminate the solution.

You will need some tools that most people who tinker with electricity will have.

Step 1: WARNING

Picture of WARNING
The following involves working with electricity.  Electricity can kill you if you don't know what you are doing.  So if you are not qualified to repair devices that require electricity then don't attempt the following repair.  If you do follow these instructions then you take full responsibility for getting electrocuted  - which as mentioned previously can kill you - or for any other risks associated with the activity outlined in this set of instructions.

For example, if you burn yourself with the soldering iron that is your fault.  If you get lead poisoning from eating the lead solder this is you fault.  If you burn down your house because you did not insulate your repair properly this is your fault.  If your spouse whacks you with the rolling pin because you destroyed his/her Christmas lights guess what - your fault.

Step 2: Tools and Materials Required

Picture of Tools and Materials Required
The tools needed are:
Voltage Detector (see picture for example)
Soldering Iron
Solder
Heat Shrink Tube
Wire Cutters
Wire Strippers
 
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PeteM114 hours ago

Even though it seems all pretty easy and the directions are clear and easy to follow, I could not repair my lights. Weirdly yet, my friend who runs a local computer service in the Broch was able to quickly repair the chain for me - it looks like it's better to trust electronically minded people rather than attempt repairs on your own. On MY own at least :D

kewrw281 year ago
Wow! Now that's using your head. Very, very informative! Thank You!
ringai1 year ago
I think that maybe soldering the LED's leads together might keep the current draw lower by keeping the current limiting resistor in the circuit. If you dremel off the cap, you might be able to tack in a replacement for the dead LED, too.

Biggsy1 year ago
Brilliant, i'm all for made do and mend. So much so i made sure all my scouts know how to change a plug and fix a broken wire... it's these sorts of life skills that will save a fortune... and the planet too i guess ;)
Phil B1 year ago
Thank you. Just last week I used one of the voltage detectors like you show to check for the correct polarity on some wall outlets I had to replace at my daughter's house. I wondered if they would work on Christmas tree light strings, too. You answered that.