Troubleshoot Mister Tablet power issues

Modified on: Tue, May 27 2025 5:16 AM

PURPOSE 

If a Mister Tablet will not power on and does not show any LED lights, follow the troubleshooting steps below in order. 


VIDEO


PROCESS

Power drain the battery: 

  1. Unlock the battery and completely remove it from the tablet, set it aside.  
  2. With the battery set aside, push, and hold the Power button for 30 seconds. 
    • NOTE: This drains the internal components of any latent electricity (power). 
  3. Grab the battery you set aside, install it in the tablet, and lock in place.  
  4. Test to verify if the tablet stays powered on.  


Check internal battery: 

  1. Plug the tablet into an outlet with its provided power cord. 
  2. Turn the tablet on and test
  3. If the tablet does NOT work, it is the lock or battery. 
    • Try a different battery - shown next - if the tablet works then issue is the battery
    • If tablet does NOT work then the lock is faulty. Contact Mister IT to process an RMA for the tablet.
  4. If the tablet works, then the issue is the internal battery.
    • Contact Mister IT to process an RMA for the tablet

Try Another Battery

  1. Remove current battery from tablet. 
  2. Install a new battery. 
    • The battery will slide in at an angle. Once it is seated flat, push it in the remainder of it. 

        

    • Once the battery is installed and the battery cover is slide over, the color latches can be engaged. 
    • All 3 latches must be green to fully lock the battery - See Below

  3. Test to verify if tablet stays powered on. 


Check the Battery Locks

  • The Mister Tablet battery latches are designed in a way that if the center latch shows green, there is a magnet that will trigger a switch that tells the Mister Tablet that the latches are secure. 
  • If this middle switch is red, the Mister Tablet will shut the screen off.
  • This allows for hot swapping of the batteries and the backup battery takes over power. 
    • NOTE: The Mister Tablet screen will not come on unless the middle latch is green. 
    •  
  • The Mister Tablet screen should turn on as shown:


Verify the Correct Power Supplies are being Used


Attempt to Power on the Tablet from the Cradle Without a Battery

  • Remove the battery from the tablet but replace the back plate and lock it in place. 

  • Place the tablet on the cradle and wait for the cradle lights to illuminate that indicate the tablet is properly seated.
  • Attempt to power on from the cradle.   Please allow the tablet 10-20 seconds to power on.  If the tablet powers on, allow it to boot all the way to Windows before removing it from the cradle and inserting a battery.  The power issues should now be resolved if you were able to power on from the cradle. 



HISTORY

Revised Date Revised By Revisions
3/29/2024 Mikayla Chin Created Document
1/28/2025 Aaron Kuerth Updated content and troubleshooting steps
3/14/2025 Andrew Poskey Updated title and content formatting
5/20/2025 Andrew Poskey Reorganized topic order, Added power supply link, Updated formatting.


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