Echo Dot 2nd Generation Troubleshooting - iFixit

Released October 2016, identified by model number RS03QR

Echo Dot 2nd Generation LED/Speaker Board and Microphone Replacement - iFixit Repair Guide

Echo Dot 5th Gen Smart Speaker Teardown

Echo Dot Teardown - iFixit

Echo Dot 2nd Generation 4-in-1 WiFi/Bluetooth/FM/GPS Replacement - iFixit Repair Guide

Echo Dot 2nd Gen Teardown - element14 Community

Echo Dot 2nd Generation LED/Speaker Board and Microphone Replacement - iFixit Repair Guide

Echo Dot 2nd Generation 4-in-1 WiFi/Bluetooth/FM/GPS Replacement - iFixit Repair Guide

Where Is the Best Place for a Smart Speaker in a Room?

Echo Dot 2nd Gen Teardown - element14 Community