the clock on my echo dot 5 with clock is way off or flashing, even after a reset

Diagnosis

The Amazon Echo Dot 5th Gen with Clock does not have an internal hardware clock (RTC) that maintains time independently; instead, it relies entirely on Network Time Protocol (NTP) servers via your Wi-Fi connection. When the clock is flashing, it indicates a "Sync Failure" state. This happens when the device has a basic network handshake but cannot reach the specific Amazon time servers to verify the current UTC offset, often due to DNS instability or a firewall blocking NTP ports (UDP port 123).

If the clock is not flashing but is consistently off by a specific number of hours, the issue is a Time Zone mismatch within the Alexa cloud profile. This occurs when the device is registered to a different region or the automatic location detection fails during the initial setup, causing the device to apply the wrong offset to the correct UTC time. You can confirm this by asking "Alexa, what is the current time?" If she speaks the correct time but the LED display is wrong, it is a display synchronization bug. If she speaks the wrong time, it is a network or account-level location error.

How to Fix It

To resolve a flashing or incorrect clock, you must force a hard resync of the device's location and network identity. Follow these exact steps:

1. Open the Alexa App on your mobile device and navigate to Devices > Echo & Bluetooth > [Your Device Name].
2. Tap the Settings gear icon in the top right corner of the screen.
3. Scroll down to Time Zone. Do not rely on "Automatic." Manually select your specific city or time zone (e.g., "Eastern Time - New York") to override any GPS errors.
4. Return to the main device settings and select Clock & Display. Toggle the "Clock Face" setting off and then back on to refresh the LED driver.
5. Physically unplug the 15W power adapter from the wall outlet. Wait exactly 30 seconds to clear the volatile memory (RAM) and discharge the capacitors.
6. Plug the device back in and wait for the light ring to turn blue and then off.
7. Trigger a manual sync by saying, "Alexa, what time is it?" This forces the device to ping the NTP server and update the LED display immediately.

If That Didn't Work

• Change your DNS Provider: If the clock continues to flash, your router's DNS may be blocking NTP requests. Access your router settings and change the DNS servers to Google DNS (8.8.8.8 and 8.8.4.4) or Cloudflare (1.1.1.1). Restart both the router and the Echo Dot.
• Perform a Full Factory Reset: Press and hold the Action button (the dot icon) for a full 25 seconds until the light ring turns orange, then continue holding until the device announces it is in setup mode. This wipes the cached network profile which may be corrupted.
• Check for 5GHz vs 2.4GHz Interference: The Echo Dot 5th Gen can struggle with "Band Steering" where the router pushes the device between frequencies. If you have separate SSIDs, connect the Dot specifically to the 2.4GHz band, which provides a more stable (though slower) connection for low-bandwidth tasks like time syncing.
• Update Device Firmware: Sometimes a pending update prevents the clock from syncing. Say, "Alexa, check for software updates." If an update is installed, the device will reboot; the clock should calibrate itself upon the second reboot.

Heads Up

• Power Supply Warning: Always use the original Amazon 15W power adapter. Using a third-party USB cable or a lower-wattage brick can cause "brown-outs" where the Wi-Fi chip stays active but the LED display glitches or flashes due to insufficient voltage.
• Placement: Avoid placing the Echo Dot directly on top of a microwave or next to a high-power wireless router, as EMI (electromagnetic interference) can disrupt the NTP packets required for time synchronization.
• Regional Moves: If you move the device to a different state or country, you must manually update the Time Zone in the app; the device will not always detect the change via IP address automatically.