Well it's a common problem, It seems that there is some carbon on the volume knob, you can just open the volume knob (there is some plastic locks to open), then use a soft cotton and alcohol to clean the knob. (note. please clean the knob carefully because there is very thin shouldering joints). Please do reply if you need any other help or information......
Answers & Comments
Hi there,
Well it's a common problem, It seems that there is some carbon on the volume knob, you can just open the volume knob (there is some plastic locks to open), then use a soft cotton and alcohol to clean the knob. (note. please clean the knob carefully because there is very thin shouldering joints).
Please do reply if you need any other help or information......
Good Luck!!
Thanks