There's no easy to use unless you are skilled all tools needed for repairing hashboard are BGA hotair, Soldering iron, soldering lead, solder paste, Multimeter, test fixture and hashboard code editor.
I would like to suggest you if you want to learn about repairing hashboard then only one website that I know this one
https://www.zeusbtc.com/ASIC-Miner-Repair/All tools you need are I think included in their PDF guides.