Remove noise while adjusting the volume controller

Have you ever encountered the loud noise when you try to adjust the volume of any speaker?
I met that a lot in my life!
That won't trouble me after today. ;)

I googled this issue from the website.
And the answer is very very simple and easy.

All you need is one Q-Tips and 1ml or less of alcohol.

1. Turn off the power, of course.
2. Use the Q-Tips and get a little alcohol on it
3. Drip the alcohol to the bottom part of the volume controller (the part connect to panel) 
4. Adjust the volume controller from the lowest part to the loudest part one or two times.
5. And guess what, the noise is gone!
6. If its still there maybe there is really some problem with your volume controller. 

Hope this helps.