TroubleshootingBefore sending your LCD monitor for servicing, please check thetroubleshooting list below to see if you can self-diagnose the problem.DVI/HDMI modeProblem LED status RemedyNo picture visible Blue Using the OSD, adjust brightness andcontrast to maximum or reset to theirdefault settings.Off Check the power switch.Check if the AC power cord is properlyconnected to the monitor.Amber Check if the video signal cable isproperly connected at the back ofmonitor.Check that the computer system isswitched on and in power saving/standby mode.Problem LED status RemedyNo picture visible Blue Using the OSD, adjust brightness andcontrast to maximum or reset to theirdefault settings.Off Check the power switch.Check if the AC power cord is properlyconnected to the monitor.Amber Check if the video signal cable isproperly connected at the back ofmonitor.Check that the computer system isswitched on and in power saving/standby mode.DP modeDP daisy chain and repeat functionsDisplayPort bandwidth limitations mean that two monitors (at 2560 x resolution) or four monitors(at x 1080 resolution) are supported in a daisy chain. Daisy chain function only works with DP signal.