No smell of burnt parts, i have successfully ran other miners on these cables, the only thing I can't test is to see if the LAN Port is working, its lights still illuminate but i get no response from it. Checked the chips, no sign of swelling. I disconnected certain cables and the miners fan ramped up, but after reconnection they would return to idle speed. I'm wondering, would a WiFi antenna work?
I would put more time observing the controller than the boards. If a boards or both boards dies, you still get "access to the miner", you will just not have any hashrate.
Wifi do work, however you need to set it up on the miner prior, since open wrt cannot automagically connect to your router's wifi.