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Laptop display stocked at the lowest brightness

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Sialis Posts 4 Registration date Sunday July 21, 2013 Status Member Last seen August 18, 2013 - Jul 21, 2013 at 08:21 AM
Sialis Posts 4 Registration date Sunday July 21, 2013 Status Member Last seen August 18, 2013 - Aug 18, 2013 at 08:08 AM
Hello

I have a Dell Studio 1555 (who cares :D) and I,m facing a weird problem which has been driving me crazy.
My laptop case was broken and after I change the case the display brightness is no longer working ( it,s in the lowest possible mode/ somehow is impossible to read or see anything ).
So far I changed the TFT cable (The problem is still there). I'm sure is not a software issue because the brightness is so low even when I restart or before it wants to load the windows OS. I already check it with different display/HDMI cable and everything works just fine, so It shouldn't be a Graphic Card's problem as well.

I don't know what else to check and I was wondering if you can help me figure what may caused the problem.

Thanks in advance.
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6 responses

Answer 1 / 6
Zohaib R Posts 2368 Registration date Sunday September 23, 2012 Status Member Last seen December 13, 2018 69
Jul 21, 2013 at 11:28 AM
Hi Sialis,

Have you tried increasing the brightness by pressing the F5 key? You have mentioned the case was broken, what type of damage happened to the laptop? Was there any impact on the LCD? If the actual damage happened to the LCD, there is a probability the LCD has damaged.

To know more about Dell's products, services and drivers & downloads, please go to http://dell.to/YBlak6
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Answer 2 / 6
Sialis Posts 4 Registration date Sunday July 21, 2013 Status Member Last seen August 18, 2013
Jul 21, 2013 at 11:40 AM
Thx Zohaib

F5 Keys and any other function keys doesn't work (note that I even try to increase the brightness in CPanel (power option) and it's now on high level, but nothing changed and display brightness still is in lowest mode)

I,m sure there wasn't any impact on the LCD, any damage

ty
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Answer 3 / 6
Zohaib R Posts 2368 Registration date Sunday September 23, 2012 Status Member Last seen December 13, 2018 69
Jul 22, 2013 at 11:00 AM
Hi Sialis,

Power off the computer and then try to power on the computer using D + Power Button. This will start the LCD BIST (Built In Self Test). If the LCD is dim during this test as well, then the LCD needs to be replaced.

To know more about Dell's products, services and drivers & downloads, please go to http://dell.to/YBlak6
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Answer 4 / 6
Sialis Posts 4 Registration date Sunday July 21, 2013 Status Member Last seen August 18, 2013
Aug 15, 2013 at 03:17 PM
Thx

Done.the LCD was dim during the test.
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Answer 5 / 6
Zohaib R Posts 2368 Registration date Sunday September 23, 2012 Status Member Last seen December 13, 2018 69
Aug 18, 2013 at 07:57 AM
Hi Sialis,

Apparently the result of the tests indicates that the issue is with the LCD. The LCD panel needs to be replaced.

To know more about Dell's products, services and drivers & downloads, please go to http://dell.to/YBlak6
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Answer 6 / 6
Sialis Posts 4 Registration date Sunday July 21, 2013 Status Member Last seen August 18, 2013
Aug 18, 2013 at 08:08 AM
thanks for advice
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