The audio jack has 3 rounded pins inside the female connector. 3 also lead in from the rear of the input.
This lets the chip turns the audio build in speakers or jack on and off.
Like myself. You are going to have to open it up. Inspect the audio jack. Come the the conclusion the jack
numeric value is near impossible to read and hunt for a replacement. This is going to require a complete
disassembly of the laptop and motherboard/pcb components from the case, and if your not confidant
you can restore it… Take it to a shop that deals with electronics. New jack. Solder, Wick, Solder iron is
required. + a precision screwdriver of the + variant.