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Burnt 85 Watt CCFL Bulb Repaired

By on December 11, 2021
cfl bulb repair







A burnt 85 watt CCFL bulb was brought  for repair. I opened the case cover, clean inside full of dust and dead tiny insects which have gotten inside for warmth purpose.

how to repair cfl bulb

Then I tested all components on board and found 4 resistors opened,

2 transistors(13003) shorted, which I de-soldered out and replaced with new ones.

bad components

However, the 4 burnt resistors are 0.5W in size, but I replaced with 0.25W. Well, it may seem unprofessional.

I did this because I have repaired quite a number of this bulb of various brand and have always found 0.25W on their boards. Why the maker of this particular brand use 0.5W remains unknown to me.

new transistor

how to fix a broken cfl bulb
Below is the picture of finished repaired work.
cfl bulb repair
imoudou onwuwah

This article was prepared for you by Imoudu Onwumah from Nigeria. He is 62 years old and has just 3 years experience in electronics repairs. I started career in hotel industry as a chef, but then I was doing repairs only in electrical repairs as a  hobbyist. In 2018, I decided to learn about electronics which through Jestine’s electronics e-books and holding my hand, am an electronics techie today.

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Note: You can read his previous article on Lead-Acid Battery Powered Table Lamp Modified To Use Lithium-ion Battery



  1. Waleed Rishmawi

    December 11, 2021 at 9:31 pm

    they are very cheap to buy so I hope it was worth the repair and parts put into it. have a blessed day.

  2. Albert van Bemmelen

    December 11, 2021 at 10:39 pm

    Good to know that various brands always have 0.25W on their boards!

  3. Babu M S

    December 11, 2021 at 11:15 pm

    Good work.Life is given to dead ccfl bulb. Thank you very much for sharing.

  4. Yogesh Panchal

    December 11, 2021 at 11:28 pm

    Good Job!

  5. Imoudu Onwumah

    December 12, 2021 at 3:33 am

    In my country such 85W bulb sells at about 3dollars and not consider cheap because daily wage is not up to this amount for some people.It pays me for the price I charge.

  6. Imoudu Onwumah

    December 12, 2021 at 4:01 am

    Thanks all for your comments.This bulb sells at about 3 dollars in my country which is more than daily wage for some people.

  7. Parasuraman S

    December 12, 2021 at 10:37 am

    A good fix! I like the care you are taking to repair even a minor device! That shows the genuine interest in the field!

  8. ivan1

    December 12, 2021 at 11:38 pm

    La ecología, la economia y la satisfacion por el éxito en la reparación ,valen el tiempo empleado FELICITACIONES
    The ecology, the economy and the satisfaction for the success in the repair, are worth the time spent. CONGRATULATIONS


    December 13, 2021 at 12:45 am

    Very helpful and interesting

  10. Humberto

    January 14, 2022 at 11:17 pm

    Good repair and thanks for sharing your knowledge


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