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Backlight is off - Sony Cyber-shot DSC-T20 Digital Camera

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You either have a bad LCD or bad backlight board. The backlight on your screen is no different than a light bulb. If it burn out it stops working, if these is no power to the backlight your screen will have an image but no backlight to see the image.

Posted on Jul 03, 2009

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How do you replace the backlight?

Posted on Jul 30, 2009

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My sansa clip will play music but the screen will not light up;


Hello,

There's a timer for the display backlight that can be set and used for
saving power. When leaving the player untouched for a certain time, the backlight switches off. Touching any button will turn on the backlight, restarting the timer.

To set the backlight timer on the Sansa Clip,
execute the following steps:
1. Press Menu button to return to the Main Menu.
2. Move to Settings and select it.
3. Select Display.
4. Select Backlight.
5. Press |<< or >>| button to select desired backlight timer.

Dec 24, 2009 | SanDisk Sansa Clip MP3 Player

1 Answer

Screen is to dark. cannot see letters very well.


Suggest you press the Fn key And the key to increase brightness, first. (Should be a key that has a sun icon on it)

Barring this does not increase the visibility of your LCD screen, the I suggest the Backlight is bad, or the Inverter.

The Backlight is a type of CCFL tube (Cold Cathode Fluorescent Lamp) mounted to the LCD screen. The LCD screen needs the light given off of the Backlight.

Replacing the Backlight is a daunting task, and if done wrong, will cause possible damage to the LCD screen.

The LCD screen itself has a thin metal frame holding the components of the LCD screen together. This frame must usually be opened on the side that has the backlight, to access the backlight. The components that make up an LCD screen are fragile, and can easily be damaged.

The Inverter supplies power to the LCD screen, as well as the Backlight.
Inverters do go bad, but commonly it's the Backlight to go first.

This shows a typical Backlight replacement. It IS not an advertisement to attempt this yourself, but a reference tool for information.

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

Nov 16, 2009 | Itronix GoBook III Notebook

1 Answer

HP Pavillion F1503 screen has gone dark...background is very, very faint, barely able to see/read it. What is the problem? If it is a ''backlight'', then what exact is a backlight, what does it do, is it...


Most of the time in this situation, the problem is due to the backlight going out. However, there are some instances where the inverter cable is bad.

The backlight is the part of the LCD which illuminates the screen. Think of an LCD as having multiple layers. One layer has the image itself on a semi-transparent layer and then behind that layer rests the backlight (usually a florescent bulb) which shines through all other layers to make the image glow and illuminate.

More info can be found here:

http://en.wikipedia.org/wiki/Backlight

As far as replacing the backlight, I always replace the whole LCD itself, which includes the backlight.

Otherwise, you risk ordering the backlight and finding out that it was the connection from the backlight to the LCD that was causing the problem (very possible) and then you would have to order the LCD anyway.

Sep 05, 2009 | HP Pavilion F1503 15" LCD Flat Panel...

1 Answer

My backlight is broken (Casio EX-Z100)


Try to check on ebay, you may find the LCD with backlight just less than 30 bucks. To replace the LCD kit is easier to replace only backlight, and it's hard to find the backlight.

Aug 21, 2009 | Casio Exilim EX-Z100 Digital Camera

1 Answer

On my xps the lcd backlight wont turn on?


could be bad backlight or inventer.

do you see picture but just no backlight?

it could also be a loose connection between the display and the motherboard.

how to replace your laptops backlight:
http://www.instructables.com/id/How-to-Replace-Your-Laptop_s-Backlight/

replace inventer:
http://www.instructables.com/id/Replace-LCD-Backlight-Inverter-on-Any-Monitor-for-/

start by checking for loose connection between the lcd and the motherboard.

Jun 07, 2009 | Dell XPS M1330 Notebook

1 Answer

Backlight


I KNOW ABOUT BACKLIGHT.1st select mene option and go to setting.After go to display setting and go to backlight option and open it, on the backlight or set the time of backlight.

Mar 25, 2009 | Nokia 1600 Cellular Phone

1 Answer

Raymarine smart pilot st6002 backlight is too dim


Get a new backlight, inverter is probably ok.

The way to check that the inverter is ok:

disconnect the backlight and if you hear a high pitched noise, the inverter is still good.

replacement backlight is available from a company called Being Seen Technologies.

there website is www.beingseen.com

Mar 12, 2009 | Raymarine Smartpilot Autopilot St6002 S1g...

1 Answer

"Upgrade" of Backlight Panel


just replace what failed.
I replace the surface mount FETs on the inverters.

Dec 03, 2008 | Sony BRAVIA KDL-40V3000 Television

1 Answer

Acer laptop


This is probably caused by a bad "inverter" board inside the screen housing.Don't worry they are relatively inexpensive and easy to replace.
However, some laptops have a failure on the motherboard which causes the backlight to go out,because the inverter,which powers/controls the backlight,depends on power and a PWM signal from the motherboard.
Backlight problems are almost never caused by the backlight itself.

Jul 31, 2008 | Palm Treo 680 Smartphone

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