How about the API logs?
Can you post both system logs and Cgminer API logs here and don't forget to use code tag a button with # icon. Alternatively use pastebin.com if you have a character limit here then share the URL here.
I search a bit it seems that some firmware has a different PSU(it means it is only made for a specific PSU)so like Philipma said check the PSU label or the exact PSU model. Tell us where we will try to find a firmware that will work on that miner with other PSUs.
Which is the best way to extract the logs, via the whatsminer tool export feature or from the ASIC web interface and copy/paste?