Anyone had a controller go bad?

Went out to the mine one day after a a4+ showed offline. Strong smell of electrical fire in the mine. Traced it back to the offline a4+

First few boot attempts the smell was VERY strong. My clothes even smelled like it after returning home. Miner starts to boot. Lights on all 4 boards go off and the fault light flashes. Miner never requests an ip address. Will not boot with any boards attached. After a few attempts the smell went away.

Yesterday during troubleshooting it randomly decided to assign itself an ip address outside of my subnet (10.58.133.0/24 when my subnet is 192.168.1.0/24). Grabbed an old router and configured it to that subnet and no luck. It wouldn't even request or assign itself an ip this time.

Innosilicon keeps telling to to update the firmware via the management console. Despite my repeated emails telling them I cannot access it.