Question about Tomtom GO 300 GPS Receiver

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TOMTOM GO 300 THe LCD screen won't light up.

My screen is extremely dim. I can barely see the image. I tried changing the brightness nothing happens. The image is the but unable to see without shining a light on it. Please help.

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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.

Posted on Jan 29, 2008

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Posted on Jan 02, 2017

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Tomtom 300


hello Simon,

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.
Good luck

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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.

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