Ok, so the new fans arrived today.
I installed them and miner is working properly.
The only problem now is that it is not detecting one of the hashing boards.
any ideas?
Turn it off and then make sure all of your cables are connected correctly and securely. Then power it on and see what it does. If, during your previous testing, you powered a hashboard without powering the controller you may have damaged it, it is also possible it was damaged by heat since it appears that you have established that you had a fan problem.