Grammatical error.
"Try unplugged (should read "unplugging") the headphone plug from the jack (receptacle) and similarly touching it .....

 

It sounds better if you say:

"Try to unplug .........

 

sarwiz,

Thanks for pointing out the error. You have been credited as sarwiz@allaboutcircuits.com on the contributors page, Appendix A-2 at ibiblio. If you would like to be credited under your real name, please send me a private message.

Thanks.

Dennis Crunkilton