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This generally means that there is a circuit error. You can try to reset the monitor by unplugging it and holding down the power button when you plug it back in. If this does not solve the problem the monitor will need to be serviced.
Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, falied inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed Dell and other monitors to get some ideas what goes wrong: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further.
OSD Unlock : Press and hold the [1] and [▼] buttons again for 5 seconds. The message “OSD UNLOCK” will then display briefly, indicating that the OSD image settings are now unlocked.
You will find that and other information in the manual located here. The above information is found on page 7.
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1. cpu problem. why because of there is no signal output from cpu to monitor. the led blinking means there is no vertical, horizontal signals from cpu to monitor.
2. your monitor connected to another system.
3. neck board dry points.
4. cheak the display cable. 13&14 pins are horizontal, vertical signals.1, 2, 3 pins , R G B , 6 ,7, 8 pins R G B ground ( coaxiler cable used , meshed wire is ground )
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