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How to re-light a burnt-out CFL bulb ?
Don't throw them away ... !!!
The bunt out CFL bulbs can be re used.
This page will describe exactly how it can be done. This is totally free information.You
know the truth about used CFL and Fluorescent bulbs. In fact,
Millions of dollars are being wasted each year. Old Fluorescent bulbs
and CFL bulbs are discarded everyday as waste. In a way this is
also hazardous for the environment due to the mercury content inside the
tubes.
But, you would wonder that these burnt-out CFL and fluorescent bulbs are still re-usable and can be relight with a simple arrangement. This has been tested, succeeded and practically being used.
Follow the steps correctly.
when a CFL bulb is out of order, first of all you have to check whether it can be repaired.
To do this, first, carefully disassemble the bulb. Separate the bulb and the ballast. There are two pairs of
wires coming out of the head of the bulb. Check each pair with a
multimeter for continuity. If the continuity is O.K. for both pairs,
then
actually the bulb is not burnt. The problem is with the balast
electronics and it can be repaired.
Link to :--> How to repair a CFL bulb?
Link to :--> What is inside a CFL bulb and the balast circuit diagrams.
If the continuity test fails in either side or both, then the bulb is burnt. But don't worry it can be re-light with a small electronic circuit which you can build for yourself.
Although the filament inside is burnt, the gas inside the bulb is still there and you can relight that gas. The gas inside the bulb never dies and it will last forever as long as the glass does not break and you can reuse it for the rest of your life.
So it is very much worth building this small circuit and replace the ballast electronics with it.
Click Here for the circuit diagram.

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