When there is no power to the flame on the ActivBoard this is usually related to a cabling issue or power issue.
Have you tested a different USB cable at all? If you have an ActivBoard with built in speakers, does the amplifier have power on the left hand side of the ActivBoard?
Should the issue persist I would recommend contacting Promethean Technical Support directly for this issue.
Promethean Technical Support
- Release notes for Radix VISO v1.42 (released 2 December 2021)
- Release notes for myPromethean Portal v1.6 (released 1 December 2021)
- Release notes for ActivConnect OPS-G v2.6.0 (released 17 November 2021)
- Release notes for ActivPanel Elements series v5.1.200 (released 20 September 2021)
- Release notes for Radix agent v1.27.1 (released 25 August 2021)