Screen darker than normal which buttons do I hit to brighten

deffinitely not a connection issue there should be some weird buttons by the f5 buttons look at instructions

Turn off the computer, then hit the power button to turn itback on and immediately start hitting the F8 key repeatedly until you see SAFEMODE. Take the Safe Mode option and let it boot up. Safe Mode will lookdifferent to you, the screen will be darker and the icons bigger, this isnormal.

Then brighten it. You brighten it by Holding Down either FN, CTRL or DEL key + Hit the corresponding key for brightening the display.
For example on my computer I press and hold the FN Function key while I hit the UP Arrow key to brighten the screen.

The brighten/darken keys normally have the icon of a circle with sprockets around it like the sun or it looks like a washer that goes between a screw.

It may be the backlighting has been readjusted by someone other yourself. Whenever you go on battery, I'm sure you've seen the screen darken a bit. This is the backlighting being turned down to save battery life. There is usually a blue function "fn" key that allows the user to brighten or darken the display. Look at the blue icons in the F1-F12 keys. The one to brighten the display looks light a sun and the one to darken the display looks a full moon eclipsed. Press and hold the fn key and tap the desired function key to brighten or darken the display.

repeatedly hit Fn+f8 button

hi,
you can adjust the contrast and brightness of the screen accordingly using the following instructions. Please select the right combination of brightness and contrast according to your desire.

• Please check out controls in the bottom of your monitor, below the scree. I have provided the image below for your reference.
• 
• In this the fourth option is OSD menu. Please click on it and you will scoll down to options .
• you can see options called "brightness and contrast". I have added picture for this too!

Once you go that page,use the menu to enter! then use the 2nd and 3rd button to adjust the brightness. Now your job is done.Please click on 1st button to exit. If you need more assistance in this, please write back to us. Please rate my solution as helpful!

You probably reduced the brightness one time, but you just forgot about it. To make the display brighter, do this:

>on your iPod touch screen, go to Settings.
>once the Settings window is open, you'll see Brightness from the list, tap on it.
>now, you drag the button to make the display darker or brighter. drag it to the left to make it darker, to the right to make it brighter. You'll notice the display darkens / brightens simultaneously as you drag the button.

For more iPod touch / iPhone tips, click here. Feel free to comment on my tips if you have other questions.

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Check to see if your battery settings are set for low power consumption or energy saver. Push the brightness button at the top of the keyboard to see if the screen brightens. If the previous suggestions didn't help then replace the backlight or inverter.

Its one of two things, bad lamps in the panel or bad Tcon board

Friend, to brighten the screen of your calculator.you need to replace your battery