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The Sleep Timer mode is an energy-saving feature that enables you to set a time for the monitor to
power on and off at the same time every day. This also extends the life of the backlight bulbs in the
monitor. The Sleep Timer has five settings:
? Set Current Time
? Set Sleep Time
? Set On Time
? Timer: On/Off
? Sleep Now
To set the timer:
1. Press the Menu button on the monitor front panel to display the OSD Menu.
2. Scroll down and highlight Management.
3. Press the OK button to select Management.
4. Scroll down and highlight and select Sleep Timer > Set Current Time. NOTE: You must set the current local time before you reset the time for Sleep Time or On Time. Note that the time is displayed in a 24-hour clock format. For example, 1:15 p.m. is displayed as 13 hours 15 minutes. A power failure or loss of power to the monitor will cause the timer to reset to 00:00. If this occurs, you will need to reset the sleep timer mode.
5. Press the OK button once to enter the adjustment mode for hours.
6. Press the - (Minus) or + (Plus) button to adjust the hour.
7. Press the OK button again to enter the time for minutes.
8. Press the - (Minus) or + (Plus) button to adjust the minutes.
9. Press the OK button to lock in the time chosen.
10. After setting the current time, the highlight automatically skips to Set Sleep Time. Repeat steps 6 through 9 to set Sleep Time.
11. If you do not want to set Sleep Time, press the OK button twice, then select Save and Return to exit the menu.
12. After setting Sleep Time, the highlight automatically skips to Set On Time. Repeat steps 6 through 9 to set On Time.
13. Set the Timer mode to On to activate the Sleep Timer settings.
14. When you are finished, select Save and Return to exit the menu.
The fifth selection, Sleep Now, turns the monitor backlights off immediately and stays in sleep mode
until the next On Time activates or a monitor button is pressed.
after blackout, check the screen as that. look in to the monitor in side angel, and if you can see darken live image in that and its working. in that condition, your LCD panel is working and the problem is no light. in that case you need to repleace or repair the " inverter unit " in that monitor. that unit makes the high voltage for back light.
after blackout , you cant see any darken image like as that, and or totally power goes off , that is different problem. for solve that need advance trouble shooting and can be need advance repair.
i have a similar problem i believe the power button on the monitor is faulty,sometimes it works sometimes it doesnt.what works for me is to hold the button until the monitor comes on and release the button quickly.
first of all you will to replace those buttons
as its useless after few years.
as per your problem is concern you might see some change after replacement.
still it does not work then there is a video problem
1 crt filament supply less
2 voltage on g2 is less .
3 check voltage on video ckt to be normal.
4 crt base loose.
5 there might be crt weak if it is old.
hope this will help.