HP Laptop trouble - taking apart

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HP Laptop trouble - taking apart

Postposted on Wed Jul 10, 2013 6:21 pm

I have gotten myself into some trouble. My goal was to take apart and then clean the cooling system on my HP DV7. All went swimmingly until there is some phantom screw in the middle of the motherboard/keyboard is holding things together. And now the ribbon cables for the keyboard and touchpad have come loose. If anyone has some insight, I'm out of ideas. I believe the silver stud that serves as the mount for the wireless card needs to come loose, but it doesn't with moderate force from needlenosed pliers.

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Sony a7
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 12:34 am

TheEmrys wrote:All went swimmingly until there is some phantom screw in the middle of the motherboard/keyboard is holding things together.


It's not 100% clear what you specific problem is.

In my experience the ribbon cables, etc. in laptops are held down by tape, the sides of the case snaps together, and the entire device held together by screws that screw into the bottom. Individual components are often screwed down, and sometimes an internal components is held in place by a screw that threads through the bottom of the device and also holds the device together.
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 12:48 am

Would this step-by-step teardown help you at all mate?

http://www.insidemylaptop.com/disassemb ... -notebook/

I know there are a squillion DV7 models so this one may not be correct, but using your specific model code will probably turn one up, or a YouTube video you could pause and watch as you go. I did this with my ASUS G53 just last week to replace the DC jack.

Are you attempting to separate the black plastic underside from the motherboard, or the motherboard from the top (keyboard) side? I'd see if you can pop up the keyboard, there's usually a screw or four underneath it holding things together :)
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 7:42 am

Its been 6 months since I disassembled my HP DV7 and since then I've done an Asus so if I get some small details mixed up, I apologize. I'll update my post this evening for accuracy when I've got my laptop in front of me.

Watch a disassembly video for something similar to your laptop like the one Juzz provided. Generally speaking, there will be a bunch of screws in the bottom and a few more under the keyboard. Once you've got those out, the top and bottom halves are secured by plastic tabs around the perimeter. If something is holding on in the middle, you've missed a screw. I suspect that (if you haven't already) once you remove the keyboard, all your problems will disappear.

Most laptop keyboards come off from the top. There will likely be 3-4 small tabs along the top edge of the keyboard to depress and the keyboard should pop right out. The ribbon cables for various things are secured under the keyboard via clamps that either pull or rotate up. Be very careful to make sure which one it is before applying force. I know the keyboard ribbon tab is a rotate/lift one which I didn't realize and broke one of the TINY pins on one side of the hinge of mine. Used a piece of Post-It note between the ribbon and the tab to get enough pressure on the connection for the keyboard to work properly again.

For future reference, a shot of comressed air into the vents on the bottom and side will get you 90% clean without having to disassemble.
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 8:21 am

This is probably the 30th laptop I've taken apart, and this is the first that has had some sort of hidden screw or middle area attachment. At this point, if you look at the last photo, the only thing I can think of is that the silver colored mounting bracket is a screwed in somehow, but after trying for a bit, the only thing I am succeeding at doing is stripping it, so I'm letting it be for now. At this point, there are two very thin ribbons that have pulled from their connectors, negating my keyboard and touchpad.

Anyone know a trick to getting that standoff removed?

And just for background, my temps went from topping out last summer at the high 60's C to hitting the low 80's the last week or so, and after shooting it every month with air, I figured there was some thick dust/animal hair caught up in the fan. Well, I got it blown out from the inside, and a gob of junk came out. Now I just need to get my keyboard and touchpad back. :evil:
Sony a7
Sony Zeiss 55/1.8 SSM, 24-70/4 SSM
Minolta 17-35/2.8-4 D, 35-105/3.5-4.5, 100-300 APO
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 8:25 am

Also, I've watched 9 or 10 of those videos... none have had the attachment that is thwarting me. If I could get the keyboard off, I could rethread the ribbons and be good to go.
Sony a7
Sony Zeiss 55/1.8 SSM, 24-70/4 SSM
Minolta 17-35/2.8-4 D, 35-105/3.5-4.5, 100-300 APO
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 9:00 am

HP laptops are fond of L tabs in the middle that need to be slid across, up or down. DM1 and HP mini both had these.

Check under the SODIMM slots etc. If you can't see a cable and you're down to the motherboard, try sliding or twisting in case it a directional L-tab, but for the love of the FSM, don't be a gorilla and yank!
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 9:47 am

What does your keyboard look like. A picture of the top might help. From the side, this looks like an older model DV7?
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 10:50 am

Here you go:

Image
Sony a7
Sony Zeiss 55/1.8 SSM, 24-70/4 SSM
Minolta 17-35/2.8-4 D, 35-105/3.5-4.5, 100-300 APO
TheEmrys
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 11:02 am

I bought it new last May as a replacement for my desktop. This is pretty frustrating. I haven't been beaten by a laptop yet. But this may be the one.
Sony a7
Sony Zeiss 55/1.8 SSM, 24-70/4 SSM
Minolta 17-35/2.8-4 D, 35-105/3.5-4.5, 100-300 APO
TheEmrys
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 3:52 pm

Nonsense!
If the youtube teardowns don't help you, the next step is the official service manual.

here's an example, but just find the one that's specific to your model number.
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Re: HP Laptop trouble - taking apart

Postposted on Thu Jul 11, 2013 8:56 pm

Thanks much, Chrispy_! Apparently, the keyboard does indeed come off. It just needed to be "persuaded."

Got the two connectors back on, but, apparently, it doesn't detect my battery. grrr. I'll have to do more work.
Sony a7
Sony Zeiss 55/1.8 SSM, 24-70/4 SSM
Minolta 17-35/2.8-4 D, 35-105/3.5-4.5, 100-300 APO
TheEmrys
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