Question about HP Compaq nc4010 Notebook

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How do i remove the bottom casing

I need to access the power socket to resolder it because its came loose would anyone know ive removed all the screws from the botom and back but its still somehow attached any help would be much appreciated

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  • juicy_liciou Jan 24, 2009

    Very helpfull Thank you very much

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You need the HP/Compaq Service Manual. This will tell you evrything on how to take your laptop apart. After you click on the link, give it a minute to download. It's in PDF adobe format.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00723167/c00723167.pdf

Posted on Jan 23, 2009

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Ok, on a laptop you need to get some cups and label them toput the screws in so you will know where they came from. Remove the PowerCord, Remove the Battery then start removing all thescrews from the bottom of the laptop. Then remove all the devices fromthe bottom of the laptop such as the hard drive, the memory, dvd/cd drive,wireless card, etc. Take note of how the wires are on the wireless card,those are the antennas.

Look inside the battery case, hard drive case, memory case and dvd drive slotfor screw. Some screws on the bottom case in inside of some of the devicecases might have the icon of a keyboard next to it. Those screws hold thekeyboard in place.

Turn the laptop over, remove the strip that is just above the keyboard but becareful because a cable might be attached to it. Then remove the screwsthat hold the keyboard in place that are under where the strip was and gentlylift the keyboard out because there is definitely a cable under it.

Next you can remove the screws from the lcd hinges at the corners and lift thelcd screen off, also note that you will have to pull the antennas cable and thelcd cable when you remove the lcd.

Next start removing any screws that hold the palmrest in place. Take note ofany cables that are attached to the palmrest and remove them then lift thepalmrest off.

Next start removing any screws you see that hold the motherboard to the bottomcase, then lift the motherboard out an start replacing the fan.

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This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket to resolder andrepair. If you cannot DIY then I suggest you get a quote first.

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My laptop has a problem with the power supply. The input on the machine is loose and it make it difficult to connect to power. Also ...there is something lose inside and it sounds like a small screw. If I...


If your adaptor is loose it need to be resoldered if you know anyone who knows how to solder ask them otherwise the repair can run about $100.
As for your particular pc I am not exactly sur how to remove the case but I suggest you flip it over and draw a diagram and make note of every screw and tape each screw as you remove it to the diagram. Accessing the inside of a laptop isnt as hard as it seems.
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I have a vaio pcg-7l1m which will not power up. Have checked adapter and it's fine. Would like to open laptop and see if input is loose. anything I need to know about getting case open? Having opened other...


Hello,

When you say you checked the adapter, I assume you mean you put a meter to it and it is giving 18-19 volts. I also assume that no power means no led's, no fans, no nothing.

Before you tear it apart, please try the following to try and get some signs of life.

Remove the battery and try to boot. Leave the battery off for the rest of the testing. Remove the hard drive, and the optical (dvd) drive. There is likely a screw on the bottom that will release the optical drive. Try to boot. If no good, remove the ram and try again. The ram stick(s) are located under an access panel on the bottom of the laptop.

If all this produces nothing, your last effort may be to resolder the dc power jack on the mainboard. This is not that difficult but you need to be careful while doing this:

I like to keep two separate containers for screws...one for those from the bottom, and one for those from the top. If you own a video camera, maybe video the laptop as you do this. It could be a valuable reference when re-assembling it :)

First, remove the access panel from the bottom that provides access to the wireless antennas (2 wires). Pop the connectors off of the wireless card. You must do this to remove the display, as the wireless antennas are in the display. Next you need to remove the top bezel (strip of plastic above the keyboard. You may need to remove some screws from the bottom to release it. Gently, insert a small flat head screwdriver under one of the hinge covers (plastic bump over hinges) and pry up . Usually it is just plastic clips holding it on and it will pop off. You should be able to remove the bezel easily.....gently, remember? With the top bezel off, you can remove the keyboard (may have screws on the bottom holding it, but likely not. Remove keyboard screws on top, disconnect the ribbon cable and remove the keyboard. Now, snake the antenna wires that you removed earlier up through the top of the laptop. Remove any connector cables going from the display to the laptop. Remove the hinge screws holding the display on and remove the display. There might be two screws on the bottom securing the display as well.

Now, remove all screws on the bottom of the laptop and try to gently pop the plastic case apart. There may be screws under the keyboard (on the top side) that hold it together too. Take your time here, paying close attention to any connector wires....BE VERY MINDFUL OF TINY WIRES AND CONNECTORS.

Once you get the case apart, there will likely be a few screws securing the mainboard to the plastic case. Remove these (circle the empty holes from the screws with a marker so you know where they go back in)

With the mainboard out, locate the dc power jack. It likely has 3 or 4 solder joints securing it to the board. With a magnifying glass, inspect the solders for cracks in the solder joint. If they are cracked, that's likely the issue. If not, resolder them anyways. Using thin electronic solder wire (do not substitute with plumbing solder) heat each solder joint, and apply a SMALL drop of solder. Not too much, or it can run down into the connector and bugger things up. Be careful not to touch/heat up any other components near the jack too.

With this done, dry fit (without all the screws) the laptop back together. Make sure all the little connectors have been re-connected and while thinking happy, positive thoughts, try to power it up :)

If this won't get it to power up, then you likely need a new main board. If you can't find one for a reasonable price on ebay, get a new laptop. In my experience, Sony will not sell a mainboard to anyone other than an authorized Sony service shop, and even if they will, it will likely cost $400 or more.....too much to spend on a part (likely refurbished) with a 90 day warranty.

Hope this helps! Post a comment and let me know how you made out.

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