Question about Toshiba Satellite A135-S4527 Notebook

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My laptop will fire up and if plugged into a desktop monitor or tv it works fine but I can't work from the laptop screen. It will light up for a moment and then go black. You can still see what is on the screen however it is very, very dark. I have one computer repair guy telling me it is the backlight bulb, another tells me I will have to replace the whole screen at a cost of about $300. What is the scoop?

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Diagnosis:
1. Test using an external monitor. If it works, then either the screen bulb or the inverter board might be defective.
2. Test the inverter. Easiest way to do it if you have a good screen with a good bulb. Connect the good screen to the inverter board & test it. If it lights up, then the inverter board is good. If it did not, then the inverter board is bad & needs to be replaced.
3. If the inverter board is good, then we are left with the possibility that the screen bulb is bad. To fix this, we will need to replace the LCD screen.

Posted on Oct 06, 2010

  • slamarand Oct 06, 2010

    Ok thanks!

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Posted on Jan 02, 2017

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