Everything you need to know about keyboard switch problems: stuck keys, chattering, and how to fix them, explained plainly.
Work through these in order, the most common causes come first.
Cause 1: Debris in the switch.
Crumbs and dust can enter the switch housing through the open bottom and bind the stem.
Fix: Remove the switch (hot-swap keyboard) or desolder it.
Use compressed air to clear debris from inside the housing.
If the issue persists, open the switch with a switch opener and physically clean the inside.
Cause: Worn or contaminated electrical contacts inside the switch.
The th in gold-plated leaf spring inside the switch makes and breaks contact multiple times during a single press when the contacts are worn.
Remove the switch, open it with a switch opener, and clean the contact leaf with isopropyl alcohol (90%+) on a cotton swab.
Let it dry completely before reassembling.
This resolves contamination-related chattering; it does not fix mechanically worn contacts.
Cause: Unlubed switch with friction between the stem and housing.
Fix: Lube the switch using Krytox 205g0 (linear) or Tribosys 3203 (tactile).
See How to Lube Keyboard Switches for the process.
A scratchy feel is normal on budget switches and is resolved entirely by lubing.
Our picks
As an Amazon Associate I earn from qualifying purchases. Picks are based on manufacturer specs, independent reviews and owner reports.
Gateron
Budget pre-lubed linear switches with a smooth 50gf feel, popular for first keyboard builds.
Glorious
Glorious Pandas have a large, rounded tactile bump inspired by the enthusiast Holy Panda.
FAQ
Stuck keys are usually caused by debris (crumbs, dust) inside the switch housing binding the stem, or a stem that is misaligned in the housing after an impact. Remove the switch (hot-swap) or use a switch puller and compressed air to clean it. If the stem is physically damaged, the switch needs replacement.
Chattering is when a single keypress registers as two or more keystrokes. It is caused by worn or contaminated switch contacts that bounce, making and breaking the electrical connection multiple times during what should be a single press. Cleaning the contacts sometimes resolves it; switch replacement is the reliable fix.
On a hot-swap keyboard, yes, pull out the broken switch and insert a replacement. On a soldered keyboard, you need to desolder the old switch (requiring a soldering iron and desoldering pump or wick) before installing a replacement. This is a repair most people find worthwhile to learn but can take 15-30 minutes per switch for a beginner.
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