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Emergency 6v Battery Fluorescent Lamp
This is the most common problem experienced by emergency lamp. http://detail.en.china.cn/provide/detail,1075042340.html whether single or double bulb. When connected to power green light will glow ,but when operated from battery lamp will not glow also the red light.
While charging we can test the battery by pressing the test button , but in this case if u press that button you will end up burning 10E resistor near the push button.
To conclude in short the main cause for this problem is faulty D882 NPN transistor , replace both the transistor , now switch on the lamp after charging the battery , it will be fine.
In case of transformerless power supply you may find only one D882 transistor.
