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Re: TOMTOM GO 300 THe LCD screen won't light up.
Screens that don't light up are usually caused by the bulb going ( called " The Backlight " ). Unfortunatly , on a TomTom it is intergral with the screen so cannot be replaced seperatly. You can only replace the whole screen. There are other possiblities for the screen not lighting such as the ribbon cable that goes to the screen might not be quite plugged in right or theres a break in that ribbon cable + other reasons that become less likely as we go down the list. A simple test with a miltimeter by someone with knowledge of tomtoms will prove or disprove the backlight working and you should then know where you stand. Good luck.
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Normally, this is in part due to you not replacing it with what should've been an LCD. The reason why it's dim is because those diodes are not getting the required voltage to emit as it should. LCD's work under a different concept where crystals use the light modulating properties of liquid crystals. Liquid crystals do not emit light directly as LED's, because it stand for light emitting diodes.
The part you need is called a CCFL Backlight. Basically, there are lights in the screen that back-light/illuminate the display. Over time it burns out and you are left with a dim and completely dull display. These are a pain to replace and expensive when bought from the manufacturer. But this site has a break down with dis-assembly instructions...if you want to try it.
how do you know it is the backlight? Usually people think that's it but it is the inverter.
f the backlight of your laptop stopped working and the image on the screen is so dim that you can barely see it under bright light, most likely you have a failed inverter board. There is a good chance to fix the problem if you replace the inverter board. If you replace the inverter board but the image is still dim, most likely there is a problem with the backlight lamp inside the LCD screen. If that's the case, try to replace the LCD screen. Note: it's much easier to disassemble the laptop display panel when the display panel is separated from the laptop. I can definitely fix either way if you are out of warranty from dell. Good luck!EJ Kudelkaej@outlet3g.com516-860-2969
When you say that your laptop "screen is dim", do you mean that there is no light coming from your screen, but you can see images on it? or do you mean that there is light coming from the screen, just a very little amount?
If you can images, but NO light is coming from the screen, then the LCD backlight is dead, and it needs to be replaced.
If there is light coming from the screen, but it's very dim, then you'll need to find the screen brightness adjustment keys on your laptop. This is usually two keys. The first one is normally in the lower left corner of your laptop and should be a different color - like blue or purple, and will be labeled something like "Fn". The second key is normally in the function key row (F1, F2, F3, etc...) and has a symbol on it that looks like a sun or burst of light with an arrow. There's usually one for "brightness UP" and one for "brightness DOWN". Hold down the Fn key, and then press the "Brightness UP" key a few times to see if the screen brightens up. Good luck.
Hi, your LCD screen's backlight has gone out. This is a hardware failure, and you'll need to have it replaced or repaired. THe LCD screen consists of two parts, the LCD screen which creates images for you to see, and the backlight which forces light through the LCD so you can see it. Your backlight has gone out, so your screen still has images, but no light.
Yes your'e right, the screen does have a bulb. Its reffered to as the ' backlight ' and from what you describe unfortunatly is sounds like yours has gone.
This light is somewhat integral to the screen so its more reasonable to change the whole screen rather than just the light.
There are other possible causes for the light not to be on as special circuits are employed to light up the screen. If these circuits are damaged in your device then its unlikely it will be economical to repair them.
I do hope this helps you or at least helps you to decide how to procede.
I too have the same problem with the same monitor.. tv looks great OSD looks great.. pc is dim.. This has nothing to do with the inverter board or the backlight.. I believe that there is an issue with the components that render the Computer video.