How to fix Christmas Lights / a Series of Lights without aTester?

[crystalhampton]

I fixed all of my strands of Christmas lights this year using your video. Thank you!

[princessiyanna]

Even though this video is 2 years old, you just saved me like $20 bucks from buying lights. Thank you so much ❤

[rhondaarriaga]

Thank you so much for the video! We had just bought new lights and I was so upset they didn’t work and did the same trick but all the lights were out just used a different set to figure it out. Saved me a trip to the store. Super helpful video!

[marsdion]

Thank you so much Sir 🩷🩷🩷 you saved my life! Now my dorm has cute lights again! Sending blessings 🙌

[CassadysChristmasLights]

I always check the flasher bulb first if there is one because those burnout all the time and they never keep the rest of the string working

[galaxys]

excellent work bro... i was looking for the same issue, but mine is little different my serial light is not totally from from one to the other end, please advise

[clairedalagan]

Sir please answer my question does it also work with led bulbs?