Roku streaming devices can appear to randomly switch off, but this is usually caused by a built-in "auto power saving" feature rather than a fault. When enabled, the device enters low-power mode after 20 minutes of inactivity and attempts to turn off the connected television, which can be mistaken for a malfunction. The issue matters because it can be confusing for users who don't realise the shutdown is intentional, though it is straightforward to diagnose and resolve once identified.

The feature only applies to certain Roku models, and where supported it can be switched off in settings by unchecking the "After 20 minutes of no interaction" option, though this must be redone after any device reset. If the problem persists, or the auto power saving option isn't available, other likely causes include unreliable power sources (such as underpowered USB ports on the TV), loose HDMI connections, faulty remote batteries, the television's own independent power-saving settings, or HDMI-CEC signals from another connected device, all of which can be tested and ruled out individually.