I recently bought an external speaker from CD-R King. Once plugged in my Asus K42F, a weird sound was produced by my Altec Lansing built-in speaker. After which, Altec Lansing's Left speaker isn't working anymore, while the Right speaker have worst quality ever. I need help with this. I plugged in a headset, quality's good. When I unplugged it, the built-in speaker sounds like trash. Help everyone.
It is possible that the external speaker connector is bad, or the solder connections on it were bad, and plugging things into it are making the connections to the internal speakers worse. When you plug something into that jack, while connection is made to the external speakers or headphones, it also disconnects the internal speakers. If when you remove the plug, the contacts are not made solid to the internal speakers again, you could have a result like you are describing. If you put in your headphone plug, and move it around a bit, take it in and out a few times, does the other speaker ever cut back in for a few seconds or intermittently, and does the bad sound in the other speaker consist of the audio getting cut in and out or a scratchy sound? If so, could be that the external speaker/headphone jack is bad. One thing for certain, there is no way that the external speakers CAUSED damage to your notebook or it's internal speakers. YOU may have caused damage by putting too much pressure on the jack while plugging the speakers in, or when removing them. Or the jack could have been defective from the factory, or had a cold solder joint. Without being there to look at it myself, I can only give these guesses.
