Question about HP Pavilion dv9000z Notebook

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I can shine a flash light into the monitor and see that it is on

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It is probably the LCD Inverter, that was the case for a Toshiba that I fixed a little while ago. Bought part off eBay, was cheap and medium easy to replace. It had the same symptom, was working but could only see the screen with a flashlight. Would have to obtain instructions to remove bezel (case) from the monitor. Inverter is usually centered beneath the screen, two small screws and plugs after bezel is removed.

Posted on Feb 27, 2010

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Monitor come on for a few seconds then goes black,green signal light stay on green. can you help


the monitor may be losing the back lite. take a flash light or bright light and shine it at the screen after it goes black. can you see a faint picture? if so the back lite has failed. usually the cost of replacement exceeds the cost of a new monitor but there are a couple of web sites that detail the replacement of the "ccfl" cold cathode flouresecent light.

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The flashing green light and no display usually means that the backlight circuit has failed. You can verify this by shining a flashlight on the dark screen and see if there is an image. If there is an image, then the problem is the backlight circuit. Often the problem with the circuit is that the transistors burn out. There are sellers on ebay that sell repair parts kits to fix these monitors if you are handy or you can bring to to an electronic repair service to have it fixed.

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My samsung 940b it has a clear bright screen ( as normal ) just for 2 seconds then the screen turns dark but you can see very very dim Window logo.Turn off the power ( does not matter for how long ) when...


Shine a flash light onto the monitor, if you can see icons/desktopon the screen then you know you need a new monitor!
You should be covered under warranty!

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Screen is black light indicates working. whay could be wrong?


It is possible that the back light on your monitor has failed, shine a flash light on the screen to see if you can see your icons....If you can then its' time to replace your monitor, These monitors had a 3 year warranty

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Monitor has power. Will come on very briefly and the go to black screen. Can turn power off and back on and get the same above result.After a 2-3 hour period may come to life...may not.


It appears as if the monitor's back lighting is failing. To test the theory, take a bright flashlight and shine it on the lcd monitor screen when it goes black. If you can see the images that were on the screen before it went dark while shining the flashlight on the screen, then the back lighting is failing. Depending on the monitor, it could have florescent or L.E.D. back lighting, but it's usually more economical to simply replace the monitor with a new better performing monitor, than to attempt repairing the back lighting on the failing monitor.

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I have an ACER AL2216W Monitor, 22 inch. Power button works, thats all. No picture at all, just a blank screen. Tried different cables and different computer hookups.. No luck. Any ideas? Do I need to...


not likely the lamp, turn it on with hooked to computer, shine an flash light at angle to screen and see if you see the desktop. if you don't then the power supply is at fault I would think. Since it sounds like your ok with opening it up do so and look at the supply, the caps!

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1 Answer

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From what you say there is probably not much you can do with it, the parts inside are SMD, to small
to work on. If you could still see txt on the screen when you shine your torch, it could be fixed by
replacing the back lighting PCB.

Hope this helps
Have a nice day.

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usually that is an indication that the back lights on your monitor is not illuminating your screen.... here's a test start up your machine and look at the monitor real close.... or shine a flash light at it... you may see your desktop afintly... which means your monitor may need a new inverter board or possible to change some capacitors on it.

you can also try another monitor just to make sure it is ur monitor which is problematic

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1 Answer

No display


With the monitor hooked up and the computer on, you can take a bright flashlight and shine it on the screen and see if it is displaying a picture. If you can see a picture then you can go the route of fixing your back light. I have a spot light that I use and it works really well. If you can't see anything then you are probably SOL and have to replace the monitor.

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1 Answer

Monitor displays breifly then goes to blank screen


I am not familiar with your particular model, but I do know what the problem is.
The inverter that runs the lights behind the screen is faulty and needs to be repaired. The lights shine from the top and bottom and reflect outwards through the panel so you can see what is on the screen. If you start the computer up, then shine a bright light into the panel you will see an image on the screen, but very feintly.
This can be cheap, it can also be expensive depending on where you go to get it repaired. Call aorund to a few TV shops in your area to get a rough idea on prices.

Hope that helps =)

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