How to Install a TKL PCB in Your Keyboard Case: A Step-by-Step Guide

Quick Answer

To install a TKL PCB, first ensure your case and plate are compatible, then mount the PCB to the plate using the correct screws, and finally connect any cables before securing the assembly in the case. Always check screw placement and alignment to avoid shorts or damage.

Installing a TKL PCB is a straightforward process, but it requires attention to detail to ensure your keyboard functions correctly and feels great. Whether you're building from scratch or upgrading an existing board, this guide will walk you through each step, highlighting common pitfalls and checkpoints along the way.

Before you begin, gather your tools: a screwdriver (usually Phillips), your TKL PCB, plate, case, and any necessary screws. It's also wise to have a soft surface to work on and anti-static precautions if your PCB is sensitive. Remember, patience is key—rushing can lead to bent pins or misaligned components.

Preparation and Compatibility Check

Before touching any screws, verify that your TKL PCB fits your case and plate. Check the mounting hole positions and the location of the USB port or daughterboard connector. If you're using a hotswap PCB, ensure the switch sockets align with the plate's cutouts. For solder PCBs, confirm that the layout matches your plate's layout.

Also, consider the mounting style. Some cases use gasket mount, top mount, or tray mount. Your PCB must have the correct mounting points. If you're unsure, consult the product documentation or reach out to the manufacturer. Skipping this step can lead to a frustrating install or even damage.

• Always ground yourself before handling the PCB to avoid static damage.
• Check that all standoffs in the case are present and correctly positioned.

Mounting the PCB to the Plate

Start by placing the plate on a flat surface. Align the PCB on top of the plate, ensuring that the switch holes line up with the sockets or solder pads. For hotswap PCBs, gently press the PCB onto the plate until it clicks into place. For solder PCBs, you'll need to install switches first, but for now, just align the PCB.

Once aligned, insert the screws through the PCB into the plate's threaded holes. Do not overtighten—snug is sufficient. Overtightening can strip threads or warp the PCB. If your kit includes mounting blocks or gaskets, install them according to the instructions before securing the screws.

• Use a magnetic screwdriver to avoid dropping screws into the case.
• If you feel resistance, stop and check alignment—forcing can break the PCB.

Connecting Cables and Wiring

If your PCB has a separate daughterboard for the USB port, connect the ribbon cable or JST connector now. Ensure the connector is oriented correctly—most have a locking tab or keyed plug. For wired-only PCBs, there's no wireless battery to worry about, but you may need to route the cable through the case's channel.

Some PCBs have additional connectors for RGB or other features. Plug these in as well, but be gentle. If you're using a solder PCB, you might need to solder wires for certain layouts, but that's beyond this guide. For now, just ensure all connections are secure and won't be pinched when the case is closed.

• Double-check that the cable is not twisted or stressed at the connector.
• If your PCB has a power LED, ensure it's not blocked by the case.

Securing the Assembly in the Case

Carefully place the plate-and-PCB assembly into the case. Align the screw holes with the standoffs. If your case uses gaskets, ensure they sit properly. Start threading the screws by hand to avoid cross-threading. Tighten them in a crisscross pattern to distribute pressure evenly.

After securing, test the keyboard before closing up completely. Plug it in and check that all keys register. If you have a hotswap board, try swapping a switch to ensure the sockets work. This is the time to catch issues—once the case is fully assembled, troubleshooting is harder.

• Use a keycap puller to remove a keycap and test the switch directly.
• If any key doesn't work, re-seat the PCB or check for bent pins.

Final Assembly and Testing

Once everything is secure, reattach the case's bottom or top piece, depending on your design. Make sure no cables are pinched. Screw the case together, again using a crisscross pattern. Avoid overtightening, as it can strip threads or crack acrylic cases.

Finally, do a full typing test. Press every key, including modifiers and function rows. If you have RGB, cycle through the lighting modes. If all works, congratulations! If not, disassemble and re-check your connections and alignment. It's normal to have to tweak things.

• Keep your screwdriver and extra screws handy in case you need to adjust.
• Consider using a keycap tester to ensure the switches feel right.

Step-by-Step Installation Checklist

1. Gather tools and verify compatibility: Ensure your PCB, plate, and case are compatible. Check mounting hole positions and connector locations. Checkpoint: All parts fit together before proceeding.
2. Mount PCB to plate: Align the PCB with the plate and secure with screws. Use a crisscross pattern and avoid overtightening. Checkpoint: PCB sits flat and screws are snug, not tight.
3. Connect cables: Attach any daughterboard cables or connectors, ensuring proper orientation and secure fit. Checkpoint: Connections are secure and not pinched.
4. Install assembly into case: Place the plate-PCB assembly into the case, align with standoffs, and screw in place. Checkpoint: Assembly is stable and aligned.
5. Test before closing: Plug in the keyboard and test all keys and functions before fully assembling the case. Checkpoint: All keys register and work correctly.
6. Final assembly and full test: Close the case, secure it, and do a comprehensive typing test including RGB and function keys. Checkpoint: Everything works; if not, disassemble and re-check.

Products That Can Help

• Tempo PCB: Building the Tempo with a solder PCB will require additional tools (a soldering iron) to install switches. However, it enables additional layouts. The hotswap PCBs don't require any additional tools and allow you to easily swap out switches thanks to Kailh hotswap sockets that are pre-soldered onto the PCB. Both hotswap and solder PCBs are wired-only. If you're installing a TKL PCB, the Tempo PCB offers both hotswap and solder options. The hotswap version simplifies installation and future switch changes, while the solder version gives you layout flexibility. Knowing this helps you choose the right PCB for your skill level and needs.
• SixtyFive Mounting Blocks: Five types of mounting blocks that can be interchanged to customize the typing feel of your keyboard to be more soft or firm. Each bag contains: QTY 5 Lattice Mounting Blocks - Carbon EPU41 Black QTY 5 Lattice Mounting Blocks - Carbon EPU41 Green QTY 5 Isolated Top Mount Blocks - Carbon EPU41 Green The lattice block mount... Mounting blocks affect the flex and feel of your keyboard. Installing the right blocks can enhance the typing experience after you've mounted your PCB. They are easy to swap, so you can experiment to find your preferred firmness.

Installing a TKL PCB is a rewarding process that sets the foundation for your custom keyboard. By following these steps and checking your work at each stage, you'll avoid common pitfalls and enjoy a reliable, great-feeling board. Remember, patience and precision are your best tools.