I use headphones from my nokia phone for my pc and they were worked great, but now i can hear the sound that comes from the right side on both speakers, and the sount that come from left i can hear on
If you look closely at the plug itself (the metal part which actually goes into the hole), you will see that there are either 3 or 4 shiny metal areas separated by some black plastic or some other hard substance. The shiny metal area is a conductor of electricity, and the black part is an insulator of electricity, keeping the conductors separate. Normal stereo earphones have 3 conductor areas, because that is all you need to send a different signal to each ear. Earphones that include a microphone, however, require four separate metal sections, because they need another separate conductor for connecting the microphone. They try to design the 4-conductor plug so that it can still be used in a 3-conductor jack (backwards-compatible), but it is not going to be perfect.So the headphone jack in your PC is designed to accept a plug with 3 separate areas, and will connect each of those 3 separate areas to the correct circuit on the sound card of the computer, but the earphones for your phone likely have 4 separate areas, unless I am barking up the wrong tree. You can typically connect another sort of microphone to a PC, but normally it is a separate plug altogether.So why did it work before, and not now, you ask? headphone jacks have very small, metal, moving parts that physically come in contact with the appropriate separate conductors when you insert the plug. Moving parts like this can change over time enough that(or can have dirt get inside them to the point where) they no longer connect exactly the same way that they used to, especially for plugs that they are not originally designed to connect with in the first place. Headphone jacks probably cost the manufacturer somewhere around a cent apiece (just guessing), so unless the manufacturer is one that will always pick the most expensive, robust components, what we are dealing with is a problem with a part that cost less than a nickel (maybe less than a penny, for all I know) and was not really engineered to handle a 4-conductor headphone jack. If you get a 3-conductor set of headphones, they will probably work correctly, but remember you get what you pay for, so the cheaper you go, the more likely they are to **** out sooner than later.
Feb 02, 2012 |