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Trouble replacing display on Satellite M35x-S349


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#1
geno368

geno368

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A family member asked me to replace her Toshiba M35x-s349 laptop display for her. I hooked up an external monitor to check video drivers, etc..worked fine. After dismantling the unit I found that someone elso had been into it before and didn't replace all the screws. Also, the is a small black wire with a round connector on it that was not hooked to a screw..I have no idea where it goes. It is wrapped with the wire coming from the MB. It may be not used since it is pretty short, but just need to be sure.

Also, I ordered the display and also a backlight. I installed the lcd, but don't see where the small backlight goes. I powered it up and got a brief small display on the lower right hand corner of the screen...than nothing. The system booted but no video. I am curious if I should replace the inverter board? Can anyone assist me in troubleshooting this? Thanks.
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#2
123Runner

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I suspect that the small black wire is a ground (black is usually a ground designation.

I am having trouble finding a service manual online. It seems that Toshiba keeps that a big secret.

Try This
You might find something here

"LCD screens require the use of an inverter to supply power to the screen’s back lighting. Backlighting is used in smaller LCD screens such as laptops to produce higher brightness and readability factors".

With that said, if the inverter was bad, you would still see what was on the display. It would be very dark and sometimes the use of a flashlight would help "show" you what was on the screen. So if you are not "seeing" anything, then something is still wrong.

123runner
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