I've been looking for something related to Antminer L7 hash board repairs before, but have been to no avail.

Today, ZEUS MINING shared "Antminer L7 Hash Board Repair Guide". If a friend needs it, please check the Support page of ZEUS MINING's website.

I leave the link to the L7 hash board repair manual:

https://www.zeusbtc.com/articles/information/3654-antminer-l7-hash-board-repair-guide