Why does my extension board LED lit even when I turn off the power from the mains?
I have attached some pictures to make things simpler and clear.
Here are some pics in order. Kindy go through them. The information is given in the picture itself!
This is the wall outlet where extension board is connected.
This is the extension board with the cord of the speaker connected to it. The switches are turned off, but the LED is still glowing...
This is the sub woofer where both the input and output RCA jacks are connected.
But as soon as I disconnect the RCA jacks, LED light turns off. (See pic)
This is the wall outlet where my PC is connected. (There must be something wrong with the "PC thing" because the the LED turns off when I disconnect the RCA jacks from the sub woofer whereas the audio input is coming from the PC itself!)
These are the connections inside the wall outlet of my PC.
Kindly go through all pictures and let me know if you need more information on anything.
What is the source of the problem? A ground?
P.S. There is no grounding in my home!