This is my own CFL Lamp. The complaint was no power and since I know how to troubleshoot and repair electronics equipment there is no reason why I should not open it up and find out the cause of the problem.

Once the top part was removed I could clearly see that the main filter capacitor was bulged-see the photo below:

I had another working set and took the good capacitor and put it on the bad board and the problem still the same. The capacitor value is 3.3 Uf with 400 working voltage.

So I checked the components in the small circuit board and all seems to be working fine. There was only one component that I did not really pay attention at and it was the coil (It looked like a small transformer).

I took both the coils out from the circuit board to compare the Ohms value and found that the good coil (Red Coil) had a value of 7.6 Ohm while for the Blue Coil (bad coil) the value was 2.2 Ohm-see the photos below:

In this case I confirmed that there were only two bad components (Coil and main filter capacitor) that had caused the no power symptom.

Both components were replaced and look at the light this CFL Lamp produced:

Conclusion- If you wish to learn how to check and test components on electronics equipment you can click here to check out Jestine’s Ebook.

This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.

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Note: You may check out previous post about fixing active speaker in the below link:

http://jestineyong.com/flash-rom-ic-caused-standby-problem-in-led-tv/