I just bought the S5 and the same exact PSU you linked. I had everything running for about 8 minutes before it just shut off. Now when I hit the power button, the fan on the S5 and the PSU spin for 1 second then do nothing. Yes, I have the paperclip in the correct spot. I don't know if the PSU is bad or my miner died... Is there another way I can troubleshoot it?   -thanks