A failing battery can sometimes cause the controller to power on briefly upon connection but then immediately disconnect, which appears as a non-responsive device. This process often resolves mysterious connection drops that seem hardware-related.
Troubleshooting Connection Drops and Reset Procedures
Advanced Troubleshooting and Reset Procedures. Avoid using metal objects, as they can scratch the contacts or cause a short circuit.
Both the console firmware and the controller's internal firmware require regular updates to maintain compatibility and stability. Sometimes, a controller with a critically low battery may refuse to connect via USB-C to prevent a sudden shutdown during data transfer.
Troubleshooting Connection Drops and Advanced Reset Procedures
Try the cable with other devices to determine if the issue lies with the cable rather than the controller or console. If no light appears, this could indicate a deeper issue with the battery or the charging circuitry.
More About Switch controller not connecting when attached
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