Question about Sharp Actius MP30 Notebook

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No Display from LCD

Hello there,

I have this notebook hp pavillion dv 2000 when i turn on the power there is no display on my LCD, what causes the problem?

Thanks..

arnel cabarrubias

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  • 458 Answers

Try to find the button that tells the screen to come on. This sticks sometimes on laptops. I always tell people not to use canned air because it only blows dust around, but it could help your problem. If you are okay with taking it apart you can find this button and see if it is sticking. This is becoming a common problem with laptops. I recently had a customer with this problem and it took me some time to figure it out. It is usually around the hinge. Look at the manual if you can't find it.

Posted on Jun 02, 2008

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No Display


First make sure everything else is getting power and operating okay, and that it is only the LCD display that is non-functional.

If you get no video signal or power at all, even at boot time, you probably have a dislodged ribbon cabling or power connection. Usually when LCD monitors go bad they show colour banding or all white, etc., but usually continue getting power.

As a last resort, try disassembling the lower case (with the power disconnected and the battery out of course) to expose the LCD monitor mounts, and then following the wiring from the screen into the laptop and check for anything loose or disconnected. You could also have a loose ribbon cable going into the LCD array, which will require disassembling the LCD cowling and mounts.

If you are handy and comfortable with electrics and find nothing loose, put the battery in and test the power line going to the LCD backlight, which should be getting above 7V (I think). Below that and you either have a bad video controller or bad wiring/solder joints somewhere. Otherwise, if the unit has been dropped or had a hard life generally, it could also be the connections between the LCD connector bus on the monitor array and the array itself. As a last resort, try unplugging and reconnecting all ribbon and connector cables, cleaning the exposed brass coloured runners lightly with rubbing acohol or even a pencil eraser.

Good luck...

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