If the screen remains black, it's usually due to the power supply or connection. Try these steps: briefly remove and reinsert the USB cable, test a different USB port, restart the device, check if the power supply is working.

We recommend using Isa with the supplied power adapter where possible, rather than via a laptop's USB port.

The reason for this: Some USB ports do not supply enough permanent power or automatically switch off in the computer's standby mode. This can cause the device to turn off, restart, or the screen may remain black.

If Isa doesn't respond after that, please contact the Support.