Quote from: Helnick on December 06, 2014, 03:37:39 AM

Hi Gang,
Have a little issue.
I just got my sp20 this week. I had a S1 w/ fortress 750 psu. So when my sp20 came I clocked it way down so I can run it with my 750w. It has been running fine @ 1.3TH but today my fortress 650 arrived. I hooked it up with the 750 and logged in to bump setting all the way up, just to see what happens. It now shuts itself down every time I turn it on. The psu are still on but it seems its in some sort of protection mode. When I switch the powers off then on again the fan on the sp 20 goes on a few secs, then off, then back on (like the normal startup) off again, then never then doesn't come back, I've tried multiple times. Any suggestions? I was thinking I screwed up a setting and had to reset but how can I do that if It won't stay on? any help would be great. Thanks

if you have two different power supplies connected to the same pcb they will 'fight' eachother over any differences in the 12v (say 12.2v vs 11.9v) or ground signals. this would certainly cause shutdowns/power cycling/damage to the PSU and/or sp20