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Please could you give us more details! When does it go off? What does it take to get it back on again? Etc
have you altered your power saving settings as follows
home-help-settings-devices-power saving-(then choose whichever suits you)
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Welcome to the Community!
As Parrotperson has said, we'll need a bit more information about the fault you're experiencing. Does the picture disappear or is the box rebooting itself? Did Parrotperson's power saving advice help?
Look forward to hearing from you!
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