Symptoms
- Console works handheld but screen stays black on TV
- TV shows no signal when Switch is docked
- Picture works sometimes but is intermittent
- Dock light is on but no picture appears
Likely causes
- CommonHDMI cable loose or faultyA common and easy-to-check cause.
- CommonWrong TV input selectedSimple to overlook, especially with multiple HDMI devices.
- PossibleDust or lint inside the dock's USB-C connectorDebris can prevent a solid connection between console and dock.
- PossibleConsole not fully inserted into the dockNeeds to be seated firmly and correctly oriented.
- Less commonFaulty dock internal circuitryDocks can fail internally after years of use or a power surge.
What to do
- Confirm the TV is on the correct HDMI input for the dock's cable.
- Check that the HDMI cable is firmly connected at both the dock and the TV.
- Remove the Switch from the dock, inspect the dock's charging connector for lint, and reinsert firmly.
- Try a different HDMI cable and a different TV or HDMI port if available.
- Test with a different official dock if you have access to one, to isolate dock versus console.
- Restart the Switch while docked to force it to redetect the TV connection.
- If the console works fine handheld but never displays through any dock or cable, the console's HDMI output may need repair.
Tools and parts
- Flashlight
Official Switch dock or HDMI cableSearch: “nintendo switch dock replacement”
When to call a pro
If a different dock, cable, and TV all fail to show a picture, have the console's HDMI output checked by a repair shop.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.