Another PC help thread

[Hasbinbad]

Because:

You heard sound once for a second in the left channel.

and:

You tried other stereo devices which you know to work.

Your problem is:

A bad connection between the female audio connector and the portion of the sound card which translates the digital output to an audio signal. This is either due to an electrical short or a physically damaged connection

It is NOT part of the actual circuit board setup before the digital translation, or you wouldn't have heard it for a second.

The fix is probably very easy if you know anything about electronics. It may require some copper and some solder, it may just require that you rebend a bent tab.

The above fixes may void any warranty you have. Only attempt with knowledge and caution.

If you try to get it fixed by a corporate entity, they will replace your entire motherboard.