Comments on: How To Repair CFL Bulb -Lesson Learnt

By: Macgy yeung

Macgy yeung — Sun, 05 Dec 2021 16:29:14 +0000

Thank from blitar Indonesia

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By: Manolo

Manolo — Sat, 24 Oct 2020 20:45:07 +0000

My experience is completely different. I do manage the lamps installed in the external part of a building, they are automatically lit at end of day and stay on all night long and automatically turned off at dawn, is that most of times the fault with my lamps is indeed in the bulb, one of the filaments get burnt and the bulb will not work anymore. I have a dozens of well functioning socket-and-circuits, because their bulbs were burnt. They last about 400-600 days (5000 to 7000 hours)

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By: Okeke Chukwuemeka

Okeke Chukwuemeka — Mon, 27 May 2019 22:44:56 +0000

In reply to Merlin Marquardt.

How and what is another name for the blue ring tester.
How can I order/buy it from you sir.thanks

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By: wyxchari

wyxchari — Mon, 22 May 2017 16:13:35 +0000

Repair fused filament: http://i.imgur.com/ikKfPBM.jpg

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By: Dilum

Dilum — Sat, 18 Mar 2017 03:53:43 +0000

Thanks for energy saving...
I too repaired hundreds of them.
once I fund OSRAM 20W one got Blue colored coused by leaking DIAC
few times I met DIAC is the problem.But most times burnt TR,Resistors & leakin CAPs.oveheating fillement is avery bad & rare case difficult to workout.

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By: suranga Electronics

suranga Electronics — Wed, 09 Nov 2016 08:01:52 +0000

Mr- Kushan,

i too Repaired This Type CFL Lamps

very Good your This Article.

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By: Maurizio C.

Maurizio C. — Tue, 23 Feb 2016 07:53:53 +0000

Nice article, Mr. Ranatunga. What about the initial (seconds lasting) flickering of lamps? Is still the electrolytic cap the culprit?

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By: mian

mian — Mon, 03 Aug 2015 14:41:51 +0000

In reply to Merlin Marquardt.

Sorry, I have missed one thing. Sometime choke is open. Please check the continuity.

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By: mian

mian — Mon, 03 Aug 2015 14:22:17 +0000

In reply to Merlin Marquardt.

I have gone through your article. I also repair energy savers. I share my views for the technicians/hobbiest. There are three stages of checking.
Before opening the bulb, check the charging and discharging of Electrolytic Cap (meter should be at its lowest continuity range). If it is ok, then open the fitting and check the heating elements continuity. It both sides are ok, then thoroughly check the circuit i.e. burnt resistors, short diods / transistors. Very rare case, Diac is short. Better if you have a magnifying glass with you. Carefully check loose connections particularly main filter capacitor.
If preopening bulb do not show charging/discharging, may be fuse is blown, or a resistor normally 1 ohm to 10 ohm in A/C series is blown, Electrolytic capacitor loose connection. Sometime with the passage of time its charging capability is very low or totally finished.

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By: frikkie

frikkie — Thu, 19 Mar 2015 15:25:41 +0000

Hi just a tip. There is a yellow powder that one can get at pharmecies I unfortunately don't know what its called in English.I do know that the athelets that do gymnastics and weight lifting put that powder on their hands for better grip.That powder you take a bit and rub it onto the copper wire,than it sucks up the solder a lot better when you desolder components.You can always strip the tv antenna coax cables.the ones that have the copper coax wires.Then you have long lengths of wire you can use to desolder components.

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