On Wednesday 16 February 2022, it was raining hard in the afternoon. Suddenly, a very loud lightning struck in the sky,
Merit given for reporting back after the problem was solved.
The electromagnetic disturbance caused by that afternoon lightning strike probably did have an effect on your miner, it could have burned it but it seems to have fixed your issue, my guess is that your PSU caused the problem and not the hashboard itself, so just in case the problem comes back, check the PSU.