I have a GE GW948 which is about 15 years old, and recently the screen starts to brighten then darken. When it really get bright there are diagonal lines in the screen. Is it worth repairing? Je

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Having installed the Magic Keyboard,Press the "Fn" button on the bottom left of the keyboard, and using the up and down scroll buttons on the right hand side of the keyboard you will be able to brighten or darken the screen.

On Battery or Plugged in? You didn't post the OS you are using, Open the Power Options, set to High Performance, open Change Plan settings, Adjust to your preference, Change Advanced settings to your preference.

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.

PLEASE RATE ME!
go to the search icon under start. search brightness. it will tell you step by step what to do.
Every laptop is different, so adjusting the brightness or contrast on your laptop may vary from the steps provided on this page. However, understanding the process of how to adjust the brightness or contrast will help you change your settings.
Most laptops adjust their brightness and other settings using the function key in conjunction with another key. For example, pressing and holding the function key (abbreviated as "Fn") and pressing the up or down arrow keys as shown in the picture below, increases and decreases the brightness.

look across the top row of keys you should see a round sort of sun symbol with nothing inside, along side that another one the same, but filled in, or something like this, theses or the like are used with the Fn Key to brighten & darken the display

The screen will automatically dim slightly when it is on battery power, this is to conserve battery power. For maximum brightness connect the power adapter into the laptop.
On the Thinkpad laptops you can adjust the brightness by pressing and holding down the blue Fn key plus the Home key to brighten or the End key to dim the screen.

with a flashlight at the back of the set often times there is an adjustment you can make WITHOUT having to open the set!!!

look for a little hole in the back of the plastic cabinet labeled SCREEN then with a flat screwdriver holding only the plastic handle, insert it into the hole and SLOWLY rotate until the screen brightens up until it is watchable.

This is compensating for age in the picture tube. you may get a few day or a few more years! of a much better picture.

If you start seeing some thin lines on the screen then back off you have gone too far. Do this adjustment with the brightness and contrast controls on the menu turned up all the way.

it is also safe to play with the focus adjustment right next to the screen if thing seem a little blurry. you will need two people one to watch from a distance for best picture.

Pressing the function and the brightness key simultaneously. it should brighten up the screen.

function key is located in the lower left of the keyboard and the brightness key is located on the upper right of the keyboard.

hope this helps.

Yes, they dim as they age, and you've done well to get 3 years out of one.
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