Thanks for posting on the Support Community.
With regard to this issue, please can you ensure that your cables behind the ActivBoard are connected and secure?
Below is an example of the 300 series ActivBoard:
Should all be connected and secure, please contact Promethean Technical Support directly and providing your serial numbers so that the warranty can be checked.
Promethean Technical Support
- Release notes for ActivInspire v2.21 (released 5 January 2021)
- Release notes for ActivPanel Elements Series v4.3.0 (released 16 December 2020) and v4.3.1 (released 7 January 2021)
- Release notes for myPromethean portal v1.4 (released 2 December 2020)
- Release notes for ActivConnect OPS-G v2.4.4 (released 16 October 2020)
- Release Notes for ActivPanel Elements Series v4.2.0 (released 30 September 2020)