If I jiggle the headphone jack it will shut off the latop speakers. Tried other headphones same result, so problem is in the jack ( worn out, poor solder connections, etc?) So I ordered a replacement jack from ebay it looks somewhat the same, but really won't know until I open the computer up. My question has anyone replaced this headphone jack on this model? Is it soldered in? If so how did you replace it? the one I purchased doesn't look like the leads on the replacement jack go beyond the jack itself.