To remove a key switch using a tool, you typically use a switch puller to grip and compress the tabs on the sides of the switch, releasing the clips that hold it in place so it can be lifted out.
When working with mechanical keyboards, especially those with hot-swap sockets, removing a key switch is a common task for customization or repair. The proper use of a switch puller tool is essential to avoid damaging the switch or the keyboard's PCB (Printed Circuit Board).
Understanding the Key Switch Mechanism
Most mechanical key switches are held in place by two primary mechanisms:
- Clips/Tabs: On the sides of the switch housing, there are two flexible tabs with clips. As shown in the reference, these tabs and their clips are designed to fit into corresponding slots or sockets on the PCB. These clips are what mechanically lock the switch down.
- Pins: The switch has metal pins (usually two for the switch function and sometimes others for LEDs) that plug into sockets on the PCB.
To remove the switch, you need to disengage the clips while simultaneously pulling the switch straight up to free the pins from their sockets.
Step-by-Step Guide to Removing a Switch with a Puller
Here is how you typically remove a key switch using a tool:
- Obtain the Correct Tool: You will need a switch puller. These tools have specific jaws designed to grip the sides of the switch housing. They often look like metal pincers with angled tips.
- Identify the Tabs: Locate the two small tabs on the left and right sides of the key switch housing. These are the components that the switch puller will interact with.
- Position the Switch Puller: Orient the switch puller so its jaws are positioned over the tabs on the sides of the switch. Ensure the puller is gripping only the plastic housing of the switch and not the keycap stem or surrounding components.
- Compress the Tabs: Gently squeeze the handles of the switch puller. This action will cause the jaws to push inwards on the tabs, compressing them. As the reference explains, the point is to "push in these tabs which have these clips on there and that clips into the pcb." Pushing the tabs inwards releases the grip of the clips from the PCB socket or plate.
- Pull the Switch: While keeping the tabs compressed, carefully pull the switch straight upwards. A slight rocking motion might be helpful if the switch is stubborn, but avoid excessive force or bending the switch sideways, as this can damage the pins or the PCB socket.
- Wiggle if Necessary: If the switch doesn't come out easily, ensure the tabs are fully compressed and gently try wiggling the switch side-to-side while pulling up.
- Inspect the Socket: Once the switch is removed, inspect the PCB socket to ensure it is undamaged and ready for a new switch.
By following these steps and using a switch puller correctly, you can safely remove key switches from your keyboard. The key is to compress the side tabs effectively to release the internal clips from the PCB, allowing the switch to be lifted out cleanly.
