HP Laptop screen goes black when tilted and cold

I tried researching this specific problem but really only ran into people that had screens that flickered every time they moved their monitor. My issue is very weird. When I first turn my computer on or wake it up the screen seems like it takes forever to come on. If you wiggle the monitor it will pop up and then go out again until you find the right spot. Now at this point I would think it is a pinched cable but as the computer warms up the problem completely goes away. I can move the monitor all around and have no problems whatsoever. This is something I can deal with but would like to know what the problem is. It is a DV9000 series laptop that is about 2 years old w/ windows 7. I just ordered a new battery for it because "it" told me I needed a new one. Wondering if it is a power issue or what. Can anyone help me out with this?

 

Bad inverter cable. And yes it is normal for a pinched cable to operate correctly when it gets warm. Remember physics class, objects shrink in the cold and become larger when they are heated. Only slightly, yes, but in a cable it's enough to bridge back the broken connection.

 

With the warming up, we're talking 10-30 seconds before all is working properly. Doesn't seem like much if any heat can be generated by that point but i'm no electrician. I've been looking at the repair manual and it's not completely clear as to how to replace this cable. Any hints? I can get to the inverter and one end of the plug but it's the other end that i'm not sure about.

 

You're probably going to have to remove the display bezel and the LCD itself as well. Oh and be careful with that bezel, it's ridiculously fragile.

On a second thought, it may not be the cable but the inverter board itself. If it never flickers again after it warms up, cold solder is a much more logical answer than pinched cable. The answer to cold solder is usually a bit of treatment with a heat gun.

On the other hand, if it only takes 30 seconds to warm up i wouldn't bother with it. I've taken apart many laptops yet i still avoid opening a display assembly whenever possible. The bezel will never fit again 100% like it came from the factory, and a knock to the panel may end up in dust inside the screen (do you think the factory is dust-free? wrong. there is always dust on the edges waiting to fall into your panel. i have a 2mm blob of something dark on the bottom of my DV9700 display, and a couple more tiny points), or pinched reflective foils resulting in little bright dots on your screen. I got one of those too, and my display hasn't been ever opened.

That blob i have simply appeared one day. I believe it's a dead insect that somehow made its way inside the screen, and it's annoying, but i've taken apart a panel before and the only place i'll ever attempt this again in will be an auto paint shop, as when you open a LCD panel you have six surfaces (back, 2 reflective foils and LCD itself) that'll gather more dust than you can ever imagine, 10 times faster than you can clean it off.

That's one more reason why i like CRT monitors - things don't get that easily inside a sealed glass tube. I wish they'd find a solution to bond the foils together, that way there would be less bugs in our computers... literally. I remember someone posting here about ants crawling around inside his screen.