With help of NOC
During last electrical shutdown a white CISCO wifi provider in TAMA storage stopped working.
Today we found out that its power supply got broken. Furthermore, NOC is not fully sure what are the 2 switches in the storage doing? Maybe old remnants.
In any case, NOC is responsible for the white CISCO wifi provider and the purple switch. The wifi source was moved and connected to the purple switch close to the DGS through POE and worked fine.
It can happen that the purple switch breaks during thunder or typhoon. A quick check would be to confirm if the LED is on on the white CISCO.