Why Do Tube Lights Blink After Turned Off?

Tubelights are often observed to blink after turning it off. This can usually be observed when the surroundings are dark. If you observe the tube lights after you switch them off at night, there is a chance that you observe them blink for a long time.

What if tubelight blinks?
Blinking of tube lights is an indication of bad wiring in your house. The wiring has been reversed entirely in relative positions of live(phase) and neutral. You can test it using your small electric tester. Test the electricity in any 3 pin socket - you will observe that the either left of right (of yourself) will show the presence of electric current. If the current is present in right part of socket, the circuitry is proper, if you find the left portion shows the LIVE current, your home circuitry is wrong.

Such wrong wiring can lessen your tubelight life.

This may not be taken so serious issue for electrical devices, but electronic devices will definitely be affected if used in such circuitry for a long time.