Well, I think I screwed up. One of the hashboards won't come on any more. The other two work, so I can still run it at 2/3 capability. I will be looking to move it indoors, instead of outside in my mining shed. I guess the humidity and/or heat was too much for it, being in south Texas. Some of the components have green around the contacts. I went to blow off the dirt and debris with an air compressor, and part of the red paint over the copper came off. Looks corroded bad.
If that hash board looks corroded have you checked all your other equipment in your mining shed? It might be worth converting your shed to use closed-loop cooling so you could remove the heat without transferring air directly from/to outside.
Do you think you'll be able to clean/repair the corroded board and get it working again?