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Use this guide to replace the audio jack (aka headphone jack or 3.5 mm jack) in your HP EliteBook 840 G9 laptop.
You may need to replace the audio jack if your headphone cable has a loose connection or if you hear distorted sound, static noise, or audio only coming from one side.
Before replacing this port, test with a different audio cable or different pair of headphones to make sure the problem is with the port itself and not the cable.
Still under warranty? Contact HP to learn your warranty status, receive a repair under warranty if eligible, or for further warranty information.
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Save your work, fully shut down your laptop, and unplug all cables.
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Use a Phillips screwdriver to fully loosen (not remove) the five captive screws securing the bottom cover.
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Position your laptop so the rear edge (with the screen hinge) is closest to you.
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Insert the flat end of a spudger between the rear edge of the bottom cover and the frame, near the middle screw and ELITEBOOK text.
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Use your spudger to pry up the cover to release the clip securing it.
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Leave the spudger inserted under the bottom cover for the next step.
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Slide your spudger along the rear edge toward one of the corners to release the rear edge clips.
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Rotate your spudger around the corner and up the edge to release the clips securing the short edge of the cover.
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Reinsert the flat end of a spudger near the ELITEBOOK text.
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Repeat the previous step for the other side of the cover to release the remaining clips.
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Slide the cover towards the screen hinge to disengage the clips on the opposite edge.
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Lift and remove the cover.
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Position your laptop so the front edge (opposite the screen hinges) is closest to you.
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Use the point of a spudger to push on alternating sides of the battery's sliding connector to walk it completely out of its socket.
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Use a spudger to lift the hinged locking flap on the audio jack ZIF connector, located near the top left corner of your laptop.
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Use tweezers to gently pull the cable straight out of its socket.
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Use a Phillips screwdriver to remove the 4.6 mm‑long screw securing the audio jack.
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Use tweezers or your fingers to pull the audio jack away from the edge to dislodge it.
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Lift the audio jack out of its recess and remove it.
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Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before you install it.
To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler. Depending on your region, used HP devices and parts can be returned for reuse or recycling through the HP Planet Partners program.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before you install it.
To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler. Depending on your region, used HP devices and parts can be returned for reuse or recycling through the HP Planet Partners program.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
