Hi guys, just bought asus mg279q monitor. I have this issue where the left half of the monitor is covered with light blue horizontal lines. The monitor was returned but the store service told me that it works fine there and they returned monitor to me. Again I have the same problem. I plugged only power cable by the lines appear again. Electricity voltage in my apartment is normal 220W. Doing all of this now I know it is not problem with electricity and my computer. Any ides what could be the problem?