What next for a bricked 7022

[Charlie_in_TX]

I have a 7022 that will not turn on. It does nothing when I press or press and hold the power button. It was working fine this weekend. Now nothing. I have had it charged. Let it discharge a day then recharged. No love.

What can I try next?

 

[Charlie_in_TX]

Got it. Reset button on the back. Seem a child put it in airplane mode, turning off the wifi, locking it up when it slept.