To loosen the adhesive holding the cover to the bottom of the Echo Dot, heat up the bottom of the Echo Dot using a hairdryer at the lowest heat setting for approximately 10-20 seconds until the bottom feels warm to the touch and the cover is easier to pry. Do not overheat the device.

Remove the cover on the bottom of the Echo Dot by using a guitar pick or flat bladed tool. Be careful with any sharp objects.

To remove the plastic base, remove the four Torx bolts with a Torx screwdriver.

To remove the base PCB (printed circuit board), remove the three Torx bolts and the small flat-flex cable. Note that there is no need to remove the four bolts that keep the power and the headphone connectors down.

Remove the four Torx bolts that hold the metal chassis to the top panel.

To remove the white plastic ring from the top PCB, remove the four silver Torx bolts with a Torx screwdriver.

Here are all the internal parts of the Amazon Echo Dot 3rd Generation.