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Laptop keyboard lights up screen is black

Fan begins to run and then fades to a stop within 15 seconds light at ac input is lit up all keyboard lights lit

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If your screen is broken then thats both bad and expensive
but there is a way to test
try to hook it up to an external monitor to see if that will work. it it doesn't then something is wrong with your motherboard

Posted on Dec 10, 2008

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My interior light won't come on in my 1999 Buick Lesabre. I have checked the bulb & the fuse. Can anyone help me with this problem? Any ideas are sincerely appreciated.


Courtesy Lights
The courtesy lights come on under the following conditions:
?€¢
Any door is opened.


?€¢
The interior lamp switch is in the ON position.


?€¢
The keyless entry transmitter unlocks the doors (illuminated entry).

When the key is removed from the ignition switch with all of the doors closed, the courtesy lights light for approximately 25 seconds before fading out.
Battery positive voltage (B+) is applied at all times through the IP fuse block CTSY LP/PWR MIR fuse 6A via CKT 640 (ORN) through the body control module (MALL) to the courtesy lights via CKT 1732 (ORN). The MALL provides a ground through CKT 156 (WHT) for the courtesy lights under the following conditions:
?€¢
The MALL receives an input from a door being opened.


?€¢
The MALL receives an input from the interior lamp being turned ON.


?€¢
The MALL receives an input from the doors being unlocked using the keyless entry transmitter.

The courtesy lamps then light.
When the courtesy lights are activated by opening and closing a door, the courtesy lights will remain on for approximately 25 seconds before fading out after all of the doors are closed. If the ignition switch is turned to START or RUN within the 25 seconds, the lights immediately begin to fade out. If a door is left open, the MALL removes battery positive voltage (B+) to the courtesy lights after 10 minutes. When the courtesy lights are activated by the interior lamp switch, the lights remain on as long as the interior lamp switch is in the ON position. When the courtesy lights are activated by unlocking the doors using the keyless entry transmitter, the lights remain on for approximately 40 seconds. If the doors are locked using the keyless entry transmitter within the 40 seconds, the lights immediately begin to fade out.
Body Control Module (MALL) Diagnostic Mode
For a detailed explanation of the MALL module diagnostic mode, refer to Body Control Module Cell 51.
What interior light ? Dome , courtesy lights etc....They don't work with switch, keyless entry , door opening ?
What

Dec 03, 2015 | Buick Cars & Trucks

1 Answer

Laptop wont start.


Remove the battery and unplug the power cord for 5 minutes, put in the either the battery or the powercord and power on.

if it doesn't power on, make sure the charging light is lit on the front of the laptop when the power adapter is inserted and plugged in properly.

light blinking when you power on means battery low / no power.

If the problem doesn't go away you need to contact acer for warranty service if you are outside warranty contact a local repairer.

Jul 20, 2012 | Acer Extensa 5420-5687 Notebook

1 Answer

Hi ive got a HP Pavilion dv6000 laptop with a black screen ,i have tried a external monitor and i have checked the ram but still black screen ,the lights are on and the fan is running..please help


Hi,

Just try to power cycle the unit by removing all power sources (battery, ac adapter) and pressing the power button for at least 15 seconds. If this will not work and you did not get an image from the external monitor, then you need your motherboard replaced.

Good luck.

May 19, 2011 | Computers & Internet

1 Answer

I have a HP dv7 laptop and the screen stays black when I try to turn it on. When you press the power button you can hear the fans kick on for a mintue then they stop and while the keyboard lights stay...


Hi
Please remove the battery, hold on power button for about 50-60 seconds, then plug-in the charger and turn the laptop ON,
Please tell us your results
Good Luck

May 13, 2011 | Computers & Internet

1 Answer

Powerbook g4 Aluminum 15 LCD


it could be the inverter to the display, or the graphics chipset or the connection between them.

Nov 02, 2009 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

1 Answer

Can't turn my lappy on


Damaged Bootstrap You need to take it for repair

Aug 16, 2009 | Acer Aspire 5520-5908 Notebook

1 Answer

Boot everytime


POBLEM WITH THE MOTHERBOARD...SORRY...
IF IT IS WITHIN WARRANTY TRY GET IT DONE THRU VENDOR IT WILL SAVE MONEY

May 22, 2008 | HP Compaq nx6125 Notebook

1 Answer

Screen went black


plz try by resiting the ram, if the problem persist then you have problem in display adapter,send it to the vendor from whom you have bought

May 16, 2008 | Compaq Presario 700 470024-192 Notebook

1 Answer

No display


Try the RAM under the keyboard. Try reseating it. Have you added any additional hardware or installed any other software lately?

Do you know how to boot into safe mode? Try that... (Press F8 at boot-up. In the list of options, select Safe Mode or Safe Mode with Networking).

Please update me of your progress.

Mar 05, 2008 | Dell Inspiron 2650 Notebook

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