Sometimes the backlight on my omnia does not come back on when bringing the phone out of sleep mode.when i press any button, i can faintly see the screen but the backlight stays off until i reset/restart. the setting for the backlight to come on when waking from sleep mode is checked.how do i sort this out?

Sleep or standby mode should allow your computer to conserve energy yet respond quickly to power back on when you need it. Most Toshiba laptops should exit sleep mode if you press a key on the keyboard or use the trackpad mouse. If the lid was closed, opening it should also wake up the computer. If none of these methods work to bring the computer out of sleep mode, you may have a power issue or software glitch. Causes Insufficient power can cause this problem, so try plugging in your Toshiba laptop before attempting to wake it from sleep mode. If this does not immediately fix the issue, your problem is more likely a software issue. If your laptop was shut down incorrectly prior to the sleep mode incident, it may be stuck on a blank screen that makes it appear to be in sleep mode when it actually is trying to start up.
Indications Press the power button for a few seconds to see if your computer will wake up. If it does, the laptop was not truly stuck in sleep mode, but rather went into hibernation mode. If your laptop is truly stuck in sleep mode, you may be able to force a shutdown by holding down the power button, but when you power back up it will move right back into sleep mode. In some cases, the power button may not shut down the computer from this mode at all.
Solution The best way to solve your Toshiba's problem is to completely remove all power from the laptop to ensure a fresh restart. Close the laptop's lid, turn over the unit and remove the battery. Also remove the power adapter cord from both the laptop and the wall socket. Open the laptop lid and press and hold the power button for approximately 20 seconds. This will drain any stored power in the backup battery. Wait a few seconds, then put the battery back in, plug in the laptop and press the power button to turn on the computer. It may start up with an error screen; in this case, select the option to start your computer normally. If the error recurs, start the computer in "Safe Mode" to see if a program running on your computer outside of the basic Windows operating system is causing the problem.
Further Help Sometimes this issue also requires holding down a specific key, such as "F8," when you restart. If the basic power drain and restart process doesn't work, you can use Toshiba's support website to look up further information for your specific model. Just click the "Product support" tab and enter your laptop's model information, then read through the support bulletins listed for your particular Toshiba model. Toshiba also maintains a support hotline at Call us : +1 850-610-1013 https://www.instantprintersupport.com/toshiba-printer-support

Sleep Timer Mode

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.

Try to update the firmware ..
Tools: Samsung I8700 Download Program , USB cable ,USB Drivers.
1.Samsung Omnia 7 usb drivers >I8700_USB_Drivers.rar.html
2.Guide: How To Update Samsung I8700 Omnia 7 Firmware +Download program > http://www.mediafire.com/?m70ic2gj75wyuke
3.Samsung I8700 Omnia 7 Firmware >file/Xf3UGPX/I8700_XXJK1.rar
Follow the instructions from the downloaded guide on how to update the firmware. To enter download mode: Press and hold: VOL UP + CAMERA + POWER (Let go of POWER button when device turns on while keeping other 2 buttons pressed) When you see the 'Samsung Omnia 7' startup screen, count 5 seconds then let go of VOL UP + CAMERA.

The following applies to Acer Laptops...

If the power indicator is lit but nothing appears on the screen - The computer's power management system automatically blanks the screen to save power. Press any key to turn the display on.
If pressing any key does not turn the display back on, check the following....
1. The brightness level might be too low. Press Fn and the right cursor key to increase brightness level
2. Display device might be set to an external monitor. Press Fn and F5 to toggle to the internal display
3. Backlight might be turned off. Press Fn and F6 to turn on the backlight.
4. If the Sleep indicator is lit, the computer is in Sleep mode. Press & release power button to resume.

That's the sleep button
(half-moon -> night-time -> sleep).
It puts the PC into standby mode. Pressing the power button should bring it back to life.

The setup menu on your monitor needs to be changed. On most monitors there are buttons which you press in sequence, go through these buttons and you will find a monitor mode which allows it to stay on permanently.

you must restore it w/ itunes.it is in dfu mode..heres how to connect it w/ itunes..
Iphone Connect With Itune
Turn Off Your Phone
Press Home Button ( 5 Second )
After 5 Second Press Power Button (9 Second )
Release Power Button
Still Holding The Home Button
Itune Detect Your Iphone In D.f.u Mode
Release Home Button

Your Iphone In D.f.u Mode With Blank Screen
done

Mine does that sometimes too. If you just press and hold the button for about 3 seconds, it will turn on within 15 seconds.

hi...my omnia does the same with my new jag xf....phone doesn't sleep and battery dies v fast....did you get any answers on this?

Dude, I had the same problem, the screen everything works fine when I use the TV out,

Check it out and tell me. I already call Sony and they will replace it with a new one, I recommend you call them if you still your warranty and your receipt.

or'

If the LCD screen suddenly turns dark

• Check the Backlight Auto-Off setting
  If the Backlight Auto-Off setting is turned ON, the backlight will turn off after a set period of time. Press any button to turn the screen back on.
  To check the Backlight Auto-Off setting:
  1. From the XMB™ menu, go to (Settings) > [Power Settings] and press the button.
  2. Highlight [Backlight Auto-Off] and press the button.
  3. Select a time interval and press the button to save. Select OFF if you wish to disable this feature.
     
     
• Check the Auto Sleep setting
  If the Auto Sleep setting is turned ON, the screen will turn dark after a set period of time. Press any button to turn the screen back on.
  To check the Auto Sleep setting:
  1. From the XMB™ menu, go to (Settings) > [Power Settings] and press the button.
  2. Highlight [Auto Sleep] and press the button.
  3. Select a time interval and press the button to save. Select OFF if you wish to disable this feature.
     
     
• Check the Display Button
  Check the Display button on the front of the PSP system. Pressing the Display button (located to the right of the PSP logo on the bottom front) will cycle through the brightness settings of the LCD screen.
  The brightness setting can only be used when the PSP system is plugged into an electrical outlet with an AC adaptor.