Some keys of your UHK may start to produce repeated keystrokes. This phenomenon is called key chatter, and it has multiple possible causes. If your UHK is affected, then please try to figure out the root cause by proceeding according to the following points.

  1. Disconnect the bridge cable and merge the keyboard halves. The bridge cable may be faulty which can cause repeated keystrokes.
  2. Connect your UHK directly to your computer. USB hubs, KVM switches and docking stations may provide insufficient power, leading to chatter.
  3. Try your UHK with another computer. Some power supplies and chargers may provide insufficient power, also leading to chatter. The computer with which you're testing should differ from your primary computer for proper testing.
  4. Use contact cleaner spray. If the chatter still persists, then the misbehaving key switches probably have some contamination inside. Please remove the keycaps of the affected key switches (possibly with a DIY keycap puller), and spray contact cleaner spray into them while pressing them a couple of times. Please note that although compressed air spray may work, we suggest using contact cleaner spray instead as it's far more effective.
  5. Replace key switches. If the above doesn't help, the misbehaving key switches must be replaced. If you have basic soldering equipment, and want to fix this yourself then you can disassemble your UHK, then desolder the affected switches, and solder new ones. If you choose this route and your two year warranty is still valid, then we'll gladly reimburse your expenses, such as key switches. Alternatively, if fixing things is not your cup of tea, and you're still covered by our two year warranty, then shoot us an email, include your order id, and we'll recall and fix your UHK.