Sorry to Hijack your thread, but it seems similar issue happened to my CS6, I was in our studio which has limited power supply (Just 2 outlets with 16Amps each) while rerouting some cabling under the pedalboard (live), I accidentally unplug the main outlet and had the CS6 shut off and then boot, it couldn't power the whole board afterwards and showed the blue LED flashing where the 2 x 500mA were. I was only using the CS6 with the HX FX, a dunlop mini wah, a tc mini tuner, and a digitech drop. both 500mA outs were used for the HX FX and Drop, thus it seems it power was not enough, did boot it many times to see where the problem was and got it fixed by switching the drop pedal from the 500 to the 200mA outlet. I'll update if any problems show up again.