LG E2350 Power Save Issue

So I just recently bought a Radeon 7970, and hooked up 3 monitors to it... I am not running Eyefinity... as a lot of games I play do not support it... to the problem... about 2 weeks ago my 2nd monitor which is an LG E2350 keeps going into power save mode... I have switched the ports and the cable's and it keeps doing it.. Sometimes It will stay on if I can get it to stay on for more than 5 minutes... but it turns into a whole hassle of disabling and detecting it via CCC and sometimes pulling and putting the cable back into the card... Its only this monitor... the other 2 never turn off.


UPDATE: I have switched the connections to different ports and it seems to be the mini display ports are causing screens to turn off.... I dont know if ports went bad? is it possible for 2 out of the 4 ports to go bad on the back of a card? Is it a power issue?
any help would be awesome.

im using 1000 watt power supply
3 24inch monitors
7970 gpu
12 gigs or ram