Hello i have 2 hex4m boards that i aquired in february 2014 after a long wait my boards have arrived finally and i got them plugged in to recover a little bit of my loss one of the boards was hashing at 250gh with some nonces after reading a bit i got that fixed by cleaning the minion chips and adding some thermal grease now is working as a charm second miner is refusing to hash i did the same operation as the 1st one and the speed i get is 2 3-gh and alot alot of nonces

here are some screens i took

 http://i.imgur.com/Y2sGENI.png

i made some tests after reading played a little with the voltages and i noticed that whatever value i put at voltage cgminer drops that value by 100  805/705...

second pic
http://i.imgur.com/lLDMOs5.png

psu/cables are brand new
psu used aksa venom power 1000w and dell poweredge 2850 psu 700w both psu are working with 1st miner perfectly

if someone could help me since technobit team answers dont come so fast