No, nothing. Units are totally dead. No Hash boards, fans, or lights on the controller. Re-power produces nothing. Leads me to believe that the PSU's failed due to the voltage. Really want to open one up and do some testing.

philipma1957 is probably right, the voltage from my 240 outlets here at the house probably varies by couple of volts up and down. When I test them I was reading 240.8v. Most appliances designed for 240v power have an outside operating range of 250v due to variance. Not these guys, apparently. Oh, was definitely running them full power mode. They were running about 28.4 when they were up. I should have switched the other unit to low power mode when the first one failed, but I wasn't thinking it was a voltage issue until they both failed.