Question about PC Laptops

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The connection where you plug in the power on my compact presario R3000 laptop is broken. The female part that you plug into is loose and probably broken away from the solder on the mother board it self. I can hold the plug in and move it to charge the battery, but as soon as I let go it stops charging and the computer shuts down. how do I take it apart to resolder the connections?

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  • rroe677224 Jan 12, 2009

    Thank you for your help, I did talk to several people about this too and was told that soldering the connector could ruin the mother board.You were right about using a temperature controlled soldering iron. It seems this is also a common problem with this laptop.

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  • PC Laptops Master
  • 32,281 Answers

Before you pull apart your laptop, check the male connector and power cord of the adapter, check it with a multimeter and or plug it into another Compaq. You could have a broken wire in the power cord, it could save you a lot of work.

To pull apart the laptop, remove the battery, hard drive and CD drive first.
Then remove all the screws from the bottom of the laptop, plus the screws on the back that holds the LCD's hinge to the laptop base.
Take a note of where the screws come from, some may be shorter that others.
The remove the keyboard (the screws should already been removed from the bottom of the laptop).
Carefully remove the plastic cover next to the base of the LCD screen, This may also cover the hinges, if necessary fold the screen flat to enable you to carefully pry this cover up and off.
The plastic top cover is clip fastened to the bottom of the case, carefully prize apart from one side and gradually work around the other sides.
You can now remove the LCD, there are two connects attached to the motherboard, unclip these.
The motherboard is under the keyboard and plastic top cover, there are screws securing it to the plastic base, remove these and you should be able to free it from the base.
Now you can solder/fix the power connector.
I suggest you use a temperature controlled soldering iron.

Don't use too much force, you might crack the plastic parts.
Best of luck and have fun.

Posted on Jan 12, 2009

  • Chris Hingee
    Chris Hingee Jan 12, 2009

    Repairs can be done with care.

    I've have repaired a couple of laptops, usually it is a dry joint problem.

    If you happen to damage the motherboard/laptop, you can salvage the hard drive and put it into an external USB hard drive case, then you will have a portable hard drive that can plug into any computer's USB port.

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1 Answer

My screen does not turn on


  • Remove all power (adapter power Cord and Battery (for laptops))
  • Hold down the ON button for 30secs (dispersing internal voltage)
  • Plug the power cord in only (ie leave battery out, for the moment)
  • Turn on
Check your power adapter. Plug it in to a known good power receptacle. See if the power adapter has any lights that light up to make sure it is getting power.
Take the battery out of the laptop and just only plug in the power adapter.
Do any lights on the laptop light up when you power it on? Does it beep?Does it make a sound? Is where you plug your power adapter to your laptop loose or broken?

if no sound or light the its either power adapter , dc jack or cable, or system board .

Please note, it is also a good measure to re seat the memory.
You may need to locate your disassembly guide



Aug 14, 2014 | Compaq Presario R3000 Notebook

1 Answer

Power cord will not light up where it is inserted into the laptop unless you hold it steady. It will not charge unless it is held in a certain position. Is the male part on the cord bad or is it the female...


You'll need to get another power cord that is identical in power and polarity and plug. One can buy a generic power supply from Walmart that will power most laptops or Radio Shack (Walmart is probably cheaper).

Once the new power supply is obtained, try it, and if the same thing happens, then the problem is in the female plug connection to the motherboard of the Compaq Presario C762NR Notebook.

The Notebook will have to be disassembled and the female plug connection to the motherboard will have to be replaced.

If the male plug end shows any fraying or excessive bending signs, then I would definitely replace the cord.

It is difficult to determine which is bad, the male or female part without changing the easiest part... the power supply.

Also, you could go to your local Compaq dealer and ask to plug in one of their power supplies to your computer and tell them the problem that you are having, determining which is bad, the male or female part of your power supply.

Good luck on this repair.

Aug 17, 2010 | Compaq Presario C762NR Notebook

1 Answer

My r3000 has a tempermental power supply. it


whatabout the lead that plugs into the laptop ? does the plug in the laptop move easily, with the lead in, Sounds like the actual plug in the laptop is breaking away, the solder around the connector. Sadly to fix that you will have to get it repaired for about £50 to £70, maybe more ?? please make sure the lead from power supply is not loose or a bad fitting.

Jun 14, 2009 | Compaq Presario R3000 Notebook

2 Answers

The power plug won't charge the battery which prevents the computer coming on


There was a recent class settlement agreed to by HP regarding these models. HP failed to notify a ton of its customers and I've contacted Scott Kamber regarding.. (We were consultants for the suit).. Weve repaired a ton of these and you are not alone. Did you buy the machine new and register w/HP? Just curious...

Ken

Aug 02, 2008 | Compaq Presario R3000 Notebook

1 Answer

Presario r3000 shuts down


I have experienced similar problems. I found that if the fans were REALLY dirty, the system would overheat and shut down with no warning.

May 04, 2008 | Compaq Presario R3000 Notebook

1 Answer

Laptop won't stay on


it might as well be a internal problem related to power or loose contacts with RAM or the power chords internally.
Better to go to the technician in this case.
Your first Battery would have been fine too..

Apr 12, 2008 | Compaq Presario R3000 Notebook

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