Thank you very much for your helpful response and for the great tutorials on your site.

As you suspected the problem appears to be a faulty video cable, the video cable has been damaged where the laptop hinges. I have a replacement cable on order and after re assembling the laptop (with the cable in a slightly different position) my problem appears to be temporarily solved.

Although I will be glad once my new cable has arrived and is in place!

Thanks again,

Lloyd

I have a hp Pavilion DV9605ea (dv9000) laptop about 6 months out of warranty. At certain angles I get green pixelation/fuzziness, but In a more close position the screen displays perfectly. The distorted image appears to effect video files and images most. Otherwise the laptop functions normally.

I have tried with another LCD screen, the second lcd screen displays fine

If the laptop works fine with an external monitor, most likely the motherboard/video card is good.

You said the screen works fine at certain angles and most likely this is somehow related to the video cable.
1. The cable could be loose on one end. Try reconnecting the cable on both ends. Reconnect the cable on the motherboard and back of the LCD screen.
2. Could be defective cable. Try replacing it with a new one.
3. There is a chance of bad LCD screen.

This failure is not related to the inverter board. The screen is still bright, so the inverter and backlight lamp work properly.

I have an HP Pavillion DV9408CA, the screen goes black and occassionally it comes back. Implies lose connection someplace. What would be my best route of action to resolve the off-warranty issue? Rather not plug in to a monitor as this ends the portability.

Can you still see a very faint image on the screen when it goes black? Look very closely.

I have tried with another LCD screen, the second lcd screen displays fine until I boot into my operating system (Ubuntu 9.10) at which point the second lcd screen loses its signal. I suspect that my os, Ubuntu is not set up to support a second display.

Any ideas if this may be related to inverter or something more serious?

P.S. Thanks for the great site – your instructions on dismantling the DV9000 are extremely useful.

I posted earlier about replacing dispay panel. got panel and exchanged it with mine with no problem. Your instructions are awesome. Turned computer on and same problem…. can see only shadows.

Did you replace just the LCD screen or the entire display assembly (LCD, inverter, cables, plastic parts…)?
If you replaced just the LCD screen but still no backlight, most likely it’s a bad inverter.

only differance now is under device manager I have a yellow exclamaition next to the microsoft ISATAP adapter #8.

I don’t know what this error means.

Ref Post #145 – Thank you so much for your advice! The new inverter board fixed the problem of the backlight turning off. =)

You are welcome! That’s why you replace the inverter first. It’s not a difficult repair and there is a good chance to fix the problem.

This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

what does this mean and what do I do. I looke it up online but dont understand what its for?
Help please