Question about Toshiba Satellite M35X-S149 PC Notebook

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Toshiba M35X-S149 laptop, lose video on boot-up.

I have a Toshiba M35X-S149 laptop and on boot-up I have no display. The screen is lit but black. After about 20 - 25 seconds the screen, still having no display, turns off. I can see it go black (not lit). The computer appears to continue the boot process as the hard drive continues to work.
I tried a desktop monitor, connected to the laptop, and at boot-up I have a small green indicator light on the monitor and I get the Windows XP screen. After about 20 - 25 seconds the screen goes black and the small indicator light turns amber. It appears I lose the video signal. Again, the boot process appears to continue as the hard drive is working. Any ideas what might be happening or what the fix might be? Thanks, Ray

Please note; I just re-soldered the "Maxum Max1532a Power Driver Chip" on the motherboard. Before I did this the laptop would not boot at all (On each attempt to power up, the laptop either does nothing, or the fan spins up, LEDs blink and then everything shuts down). If it were a bad solder - could it be interfearing with the video signal after 20 - 25 seconds? The fix can be found with site for details at; imateski.blogspot.com/2008/08/toshiba-satellite-m35x-motherboard.html

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Hi oysertails...
Try hooking your laptop up to an external monitor...if you can see the picture on the external monitor then your lcd screen may need replacement or the lcd inverter board.
Please take time to rate me

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Hello, When i turn my computer on the screen clearly turns on however there is nothing on it. It is just black but that sort of off black that is lit up. It makes some sounds as if it is doing something...


Hello !

Connect an external monitor and if it works, your problem is the display's backlight or inverter board.

If you were experiencing discoloration in the screen (pinkish lower light hues) before it failed, that would indicate a CCFL backlight issue. If the screen suddenly went dim on you rather than a slow degradation the inverter would be indicated.

In either case, a technician in your area should be able to help. Evaluate to see if the repair is cost-effective.

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This issue is usually of of 3 things...

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best of luck,

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It is more than likely that it is the display that is the problem.
And your original problem may have been the display and not the motherboard.

Please rate this if you find it helpful.
Thanks

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2 Answers

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You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

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sounds like the display/cable or the port on the systemboard failed. please call toshiba support http://www.toshiba.com/tai/support/support_cons.jsp

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