Question about Toshiba Qosmio Computers & Internet
Backlight on the LCD screen shuts off after 5 seconds
Check and change the display inverter. backlight problems are related to invereter.
Posted on May 13, 2013
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Posted on Jan 02, 2017
SOURCE: Backlight of LCD turns off
For latitude systems they have this ambient light sensor. it basically adjusts the brightness of the screen depening on room lighting. try to go to bios by hitting F2 on the dell logo. go to video and try to look for ambient light sensor. however, im not sure if your computer has that feature I have a second option for you though. based on the troubleshooting you've done, it seems that the video back lighting is affected by movement. it would be a good try to reseat the LCD cable. you can use this link to guide you in fixing the computer : http://support.dell.com/support/edocs/systems/latd505/sm/keyboard.htm
all you need to do is to take out the keyboard with 2 screw holding it in place. the LCD cable should then be accessible. it a thick cable that coming out of the Left hinge.
Hope this helps.
Posted on Dec 25, 2007
The problem is in fact the backlight as you are saying but i am not sure if it is the wiring to the power supply or if your backlight is just burning out. You can ask the company if you can send it in for them to look at it.
Posted on Feb 14, 2009
SOURCE: Backlight wont stay on
The inverter board which provides the backlight power isn't working properly. This is a pretty common problem with LCD screens. The inverter is in the display, mounted under the display panel. It's a fairly simple job to replace the inverter. You have to remove the screws holding the front of the display to the back and separate the pieces. The inverter is held in place by a couple of screws and has a couple of cables connecting it to the main board and display panel. Unplug those, remove the inverter, mount the replacement and plug the cables back in. Then reassemble the display. A search on Google for "acer 5315 inverter" turned up several sources for the replacement part. Here is one. I don't know anything about this seller; I just picked it as an example.
Posted on May 19, 2009
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