^ Thanks a bunch, that helped a lot! I just opened it all up again and took each blade out, and a good percentage of the heatsinks screws were loose, so I tightened all four up on each blade and powered back on; unfortunately it's the same.
Every blade works in low clock mode.
As soon as I switch to high clock and click reset they turn to x's, sometimes I get a few o's momentarily, but eventually they revert to x's.
Clicking clock mode back to low does not work unless I power off/on the PSU again.
Once the power has been turned on/off it mines at 32 gh/s in low clock mode no problems.
Same problem here ! I saw in an earlier post, that you had to test a blade one by one in high clock mode, when you insert the blade that fails the high clock then this is it !