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Follow this guide to open your Logitech G903 wireless mouse.
Opening your mouse gives you access to clean its internals, troubleshoot mechanical problems, or replace a part.
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Before you begin, flip the mouse's power switch to the OFF position.
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Unplug all cables from the mouse.
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Heat an iOpener and lay it on the mouse feet for one minute to heat the adhesive.
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Slide the tip of an opening pick under an edge of the bottom mouse foot, making sure it goes under both the foot and its adhesive pad.
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Gently slide the pick farther under the foot and lift until you can grip it with your fingers.
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Use your fingers to peel up and remove the foot.
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Slide the flat end of a spudger under an edge of the adhesive. If the adhesive seems stuck, you may need to heat it further.
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Peel the adhesive off.
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If any of the feet got damaged during removal or separated from their adhesive pads, replace them.
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Use a spudger to carefully scrape up and remove any remaining adhesive bits.
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Use isopropyl alcohol and a microfiber cloth to thoroughly clean all adhesive residue from the foot recesses. Allow the surface to completely dry (about 1–2 minutes).
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Remove the feet from their backing and firmly press them into place.
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Repeat the process to remove the two pentagonal mouse feet on the left and right sides.
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Heat an iOpener and apply it to the Logitech sticker for one minute to soften its adhesive.
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Slide the tip of an opening pick under an edge of the Logitech sticker.
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Gently slide the pick farther under the sticker and lift until you can grip it with your fingers.
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Use your fingers to peel up and remove the sticker.
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Use a Phillips screwdriver to remove the seven 4.5 mm‑long screws securing the two halves of the mouse together.
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Swing the top case towards the rear of the mouse to access the internals.
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Keep the top case lifted with one hand, or use something heavy to support it while you work.
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Use a spudger or clean fingernail to gently flip the hinged locking flap on the interconnect cable ZIF connector up and towards the front of the mouse.
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Use tweezers or your fingers to grip the interconnect cable by its pull tab and slide it out of the socket.
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Use a pair of tweezers to firmly grasp the sides of the battery connector.
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Pull the connector up and out of its socket, gently rocking it back and forth to loosen it.
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Remove the top half of the mouse.
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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.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
Reuse or Recycle—Never put discarded electronic parts in household waste. Visit Logitech Recycling to find your nearest recycling points, including the option to mail back old devices to Logitech for free if there’s no convenient solution in your area. You can also take your e-waste to any R2 or e-Stewards certified recycler. And don’t let good working parts or repaired devices die a slow death in your sock drawer—pass them along to someone who can use them.
Share your experience—Leave a comment here or send your feedback directly to Logitech at repair@logitech.com to help shape future repair guides and product design.
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Would this let me remove the left and right buttons to clean under? Because if there's an easier way to clean this godforsaken design I'd rather start there ;P
There are several additional steps required to replace the Omron switches. This requires removal of the battery to access one of the screws. Beware when removing the battery that it's easy to puncture since you have to wedge a tool beneath it to pry it away from the double-sided tape.
