A Open monitors

Question

I have purchased QuadStation 8x from http://www.naplestech.com/shopcart/quadstation_8.aspAfter few months A Open monitors starts to change bacground colors and in final stage one by one stop working. Actually I can use just 4 of 8 but stil sometimes need to turn on and off to get picture.The seller hand me over to A Open Service and they do not respond to my calls even I have called three times to voice recording device. Unbelievable customer support!! (Dorothy [phone]) Is there anybody who has experience with A Open monitors that they simply stop working after several months? The monitor turn on button just blinking in green color and sometimes it appears A Open name on screen but can't turn on picture. At the beginning stage it helped to turn monitor off and wait several minutes and turn on back. But now monitors are dead. I tried monitor with laptop but doesn't work. So it is monitor and not graphic card. Please help!