Quote from: philipma1957 on November 11, 2013, 03:51:39 AM

I am usa based I have 3 of them..

One) they will burn up most power supplies. -----------killed 2 power supplies

Two) If you get a good power supply and run 49 sticks you may over heat the hub. ------------melted the fuse supplied

it was a 40 amp fuse. they issue is a 40 amp fuse will not blow but it will get hot enough to melt shit. I put in 30 amp fuses and problem stopped.

Three) If you are willing to run 35-42 sticks they are okay.-------- I now run 2 of them with 36 and 39 sticks each no worries

here are 3 in action before I melted the 40 amp fuse

http://imageshack.us/scaled/large/34/imm5.JPG

maybe its the way you ventilate the board. it looks like you're not allowing air to go pass the board itself. your only cooling the miners. have you tried cooling the board too?
you might want to turn the fans around so they blow air at the miners rather then pulling air away.