Ace 3 fully charged black screen

[Tunco]

I can see my son’s Ace 3 is fully charged from the app and that it synced 3 hours ago but the screen is black and there is no vibration when pushing the side buttons. I tried holding for 5 seconds to restart and nothing happened. Please advise. 

[ManuFitbit]

Welcome to the forums @Tunco.

Thank you for sharing the details about your Ace 3, and for trying to fix it on your own. 

If it is regarding to a battery issue, please see the points listed in this help article. 

In addition, please try to change the clock face asi indicated:

• On the Today tab, tap the upper left corner icon.
• Tap My Family.
• Under your child’s name, tap Switch to Kid View.
• Tap your child's profile picture, and tap Ace 2 tile.
• Tap Clock Faces > All Clocks.
• Browse the available clock faces. Tap a clock face to see a detailed view.

Tap Select to add the clock face to Ace 2 and sync the tracker.

Try to restart the device folling these points:

1. Plug the charging cable into the USB port on your computer or any UL-certified USB wall charger.
2. Connect your device to the charging cable. For instructions, see How do I charge my Fitbit device?
3. Press and hold the button or buttons on your tracker for 5 seconds.
4. Release the button. When you see a smile icon and the tracker vibrates, the tracker restarted.