Problem with dark LCD screen and accessing the the LCD ribbon that I think is loose
I have a HP DV1010 laptop and I think the ribbon that connects my base to the LCD screen is out of place as the screen is very dark and nothing seems to fix it. The problem is that I don't know how to remove the casing to get to the ribbon or even really what to do with the ribbon?
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Re: problem with dark LCD screen and accessing the the...
You could have a defective screen - a defective inverter or a CCFL lamp. To determine if you have a LCD screen or video card problem, read this and follow the instructions.
Defective CCFL backlight, it may have the following symptom:
Screen flashs on red/pink and off.
Picture stays on in red and slowly be come normal.
Picture flickering with dim display or appear black.
Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp
Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.
Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case. The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills. Check out www.lcdparts.net for parts, repair service and DIY info.
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Yes there is a ribbon cable that connects to the back of the monitor, but as a rule, if that cable is loose you lose the monitor all to gather Was the laptop dropped, jarred, fell over on the screen, with the lid closed? Has a driver been updated resently? I had a similar issue but thr monitor was dark no connection, I accessed the rear of the monitor, and reseated the ribbon cable, and secured it with tape. Your problem sounds different like a software issue. You have tried to reboot? remove battery before, plugging the AC in.
It could be the monitor or graphics card or CCL are done. Or maybe a simple small switch that shuts-down the light when the lid is closed. I repaired a HP that the switch had "stuck" in the closed position, you could see the screen in the bright sunlight and see the windows OS. The background light,CCL in older machines, was not lit. I once had to access the rear of the monitor, in a laptop, to re-insert a loose ribbon cable that had jared loose causing the screen to go dark.
Few trouble shoot solution when it comes to these HP Laptop from 08-09.
1). Remove battery and ram. Plug in AC Adapter and insert only ONE RAM into a slot. Boot up and see if this will turn on display (it work on a HP Dv4-1225dx) IF it works then shut down and re insert the two ram and should be good to go :)
2). If your tech savvy remove keyboard and gain access to LCD flex ribbon cable to check if cable is loose (or go on a limb and replace the lcd flex cable ). I would detach it and re attach the ribbon back to motherboard. ( This happen sometimes by chance)
3). Your LCD is shot dead so it will need to be replaced. Current used LCD can range from $40-$50 and new ones with warranty $60-$100. HP is set up for easy LCD removal so shouldn't take more then 30mins to replace, just be careful when handling the ribbon and inverter cables.
GOOD LUCK (Fix many HP Laptop for friends and family)
You need a new screen or inverter, depending on the problem. You can't
replace the backlight itself because it is build into the LCD panel.
Using a mercury reaction, it makes light. Because of the mercury, it is
also dangerous to replace.
Sounds like the lcd ribbon might have come loose. Or the lcd screen itself needs to be replaced. I have included a link here. The website shows detailed pictures about how to access the parts needed to fix this problem.
The ribbon i'm speaking of is just like the vga cable you use on a normal monitor. Since there is a limited amount of space in notebooks they turned this thick cable into a small flat ribbon.
Try to look and make sure all the connections are tight and as they should be. If nothing changes you will have to change the LCD display.
Sounds like a problem with the ribbon for the screen being either having a loose connection or getting nipped. Pretty common on laptops because the ribbon runs along by the hinges on the base and then up to the screen.
Hopefully you will be able to access the ribbon on your model by removing the plastic bezel which lies just above the keyboard. The ribbons I have seen are about 1/2 inch wide and as I said connect on the base and the screen. The connection just pushes in. If its loose at the connection on the base then obviously push the connection fully home. If it's getting nipped then reseat it so that it does not get caught. ***NOTE*** a problem could arise if the ribbon has actually been damaged from being nipped - opening the laptop could cause it more damage and then you could lose the screen until you replace with a new ribbon. These can normally be purchased on places like Ebay and don't cost an arm and a leg.
If this helps, I'd appreciate feedback so other people can use this as a solution. Thanks
If light is good and picture flickers, then it is either a bad LCD ribbon cable, or cable not well placed into connector, or a bad LCD display, usually it is the cable. If picture flickers like light is dimming out and coming back, then it is the LCD lamp, probably in need of replacement. In some rare case a faulty Video card is causing the problem. Usually to fix this you need to take apart LCD display and upper laptop plate, to reveal the display cable.
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.