Culler – 35 mins ago »
The TV is a Samsung RU7100 4k.
When I remove the power for a few seconds, the box starts up, goes through Android startup, briefly goes to the channel it was on before going black again.
This is going to be tricky.
Assuming you have windows. Can you see the box in windows explorer network options. If so right click and properties should give you it’s IP address on your network.
Without video struggling to know how to reset the box to factory defaults.
Perhaps leave the power off for say 10 mins. It may be retaining stored power in the capacitors in the unit. If you see the Humax flash screen on restoring power it’s a good sign.