Question about Computers & Internet
Black screen even with new screen
A) The Backlight IS built into the LCD screen assembly.
It's a series of LED's. (Light Emitting Diode)
I assume there is no screen Inverter, because it is LED backlighting. Also because I cannot pull one up.
Therefore I conclude that the Video Cable is either not connected securely to the motherboard connector, or the LCD screen connector; or is damaged.
Or it is the wrong LCD screen.
Did you check the motherboard side connection?
PHYSICALLY? Visual will NOT do.
Sure the LCD screen side connection of Video Cable is tight?
Did you perform, or have performed; a continuity test on the Video Cable? Check it's tiny wires to make sure one isn't stretched/broken?
You can remove the Video Cable, take it to the nearest small computer shop, and have the resident tech perform a continuity test on it. Few bucks.
If the sheath of the Video Cable looks to be damaged, the wires inside may be also. However, DO NOT assume. Needs to be tested.
For additional questions please post in a Comment.
Posted on Jan 10, 2013
Testimonial: "Thank you i will try this today"
If you display on tv ...that is a special card doing the video for tv... you need to replace video card on pc or get an external usb video device and plug in external monitor... cheaper to replace pc totally
Posted on Jan 10, 2013
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Posted on Jan 02, 2017
Since the laptop works on the external monitor, then it would be safe to assume that it is only the L:CD display part that is the issue. Often LCD display (of laptops) are working but only that you can see the actual display. One way to verify is to shine a flashlight at an oblique angle to the screen, semblance or part of the desktop could be seen. If the desktop could be seen (albeit very very dark background) then it could either be the CCF Lamps (cold cathode florescent) or the inverter that powers the lamps.
Often, the defective component would be the inverter. It is relatively easy to replace the inverted. It is sometimes more difficult and challenging cracking open the casing of the display panel of the laptop than replacing the inverter. Additionally, inverters are readily available online. It is also not surprising that inverters for other brands/models would also be used in your Toshiba.
This would be a good place to start for inverter boards. This is a nice tutorial if you are considering a DIY.
In some worst case scenario, it could be the video interface or even a loose/open flat cable from the laptop's main body towards the LCD display panel.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.
Posted on May 08, 2008
Change the settings from the display settings panel. (Right click on the desktop and go to display settings)
You should see 2 monitors graphically represented there.
You can make the monitor that is greyed out active by right clicking on the monitor, and selecting active.
Posted on Dec 11, 2008
-try updating the system BIOS of the computer
-click on drivers and downloads
-click or choose by service tag
-download the BIOS and install it on the computer
Posted on Oct 04, 2009
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