If the Caps Lock key on your MacBook Pro M1 (2020) is working but the light isn’t blinking, you can try a few steps to troubleshoot this issue:
1. **Restart Your MacBook**:
- Sometimes, a simple restart can fix minor glitches with the hardware, including keyboard light issues.
2. **Check Keyboard Settings**:
- Go to `System Preferences` > `Keyboard` and ensure that the option to enable the Caps Lock key is turned on.
3. **Reset the SMC (System Management Controller)**:
- The SMC controls various low-level functions including some keyboard functions. Resetting it can resolve issues with the hardware. Since you have an M1 MacBook Pro, there is no traditional SMC reset process, but you can try restarting your MacBook to see if that helps.
4. **Update macOS**:
- Ensure that your macOS is up to date as sometimes bugs that affect hardware performance are resolved with software updates.
5. **Safe Mode**:
- Boot your MacBook in Safe Mode to see if a software issue is causing the problem. You can do this by turning off your Mac, then turning it on while holding down the Shift key until you see the login screen.
6. **Check for Physical Damage**:
- Examine the key to see if there is any visible damage or something stuck under it that might be affecting the light.
7. **External Keyboard Test**:
- Try connecting an external keyboard to see if the Caps Lock key works on that. If it does, it may indicate a hardware issue with the built-in keyboard.
8. **Contact Apple Support**:
- If none of the above steps work, it might be a hardware issue that needs professional attention. Contact Apple Support or visit an Apple Store or authorized service provider.
Before you take it to a service provider, make sure you back up all important data on your MacBook Pro.