I tried to wire it as in the OP, molex splitter, two yellow cables going to the + of the blade and four black to the -. I always considered myself somewhat sloppy when it comes to dealing with hardware, it is possible i have messed it up with screwing? there are 4 of these screws on the connecter, what should be their position?
Facing the screws, the two left screws are GND, the two right screws are +12V
You don't need to connect all 4 terminals, you can use only one of each (as long as you have enough wires for 10A per Blade)
This PSU should be enough for up to 4 Blades
Btw status CHIP:OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO is displayed even if not hashing?
Yes. I don't know what's wrong if not the PSU. All the doc I've seen mentions either a faulty PSU or something awful when you only get x's instead of O's and it persists over cold restarts. Are you sure that they were OK in the first place?
About the polairty, isnt it the opposite? Because minus (-) is drawn on the left side on the back side of the blade, while + on the right one. Just opened a brand new blade, same situation status XXX. The first time i powered the other blade i remeber the psu's fan starting to move and the heatsink on the blade got warm, but i had issues with my router then. Ever since it just gets powered and the psu's fan is silent.Theres something else i remeber about the intial powering of the blade i remeber i didnt mount the screws, i just stuck the cables in (they seemed loosely), is it possible that i have messed up something with the cables

My source seemed reliable, i hope they are ok.
Theres something about the OP i couldnt understand "Remember to plug the 10A fuse [red disk] in, either way round will do." any clarification on that?