Thursday, 1 May 2014

Replace broken DC power jack on your laptop computer

Replace broken DC power jack on your laptop computer

Replace broken DC power jack on your laptop computer (UPDATED).

OK, I had my kids running around my room and kept tripping on my laptop's power cable. Then DC power jack was damaged. I had to always keep pressing the jack in order to charge my laptop. I reached my limit. I was almost throwing my computer out of my window, but it cost about 

This instructable does not require advanced soldering/desoldering skill. I had never desolder anything before, but was able to somehow desolder the jack.

The problem kept coming back. So I did permanent fix using modem port in my latest instructable.


Step 1: Initial Diagnostics

You can observe the damaged DC jack on the back of my computer.
The new DC jack shows how it is supposed to be.

Step 2: Materials required

Materials required for this instructable are following.

1) Soldering iron (25W)
2) Multimater (optional)
3) Small screw drivers: 1set
4) Pen
5) Paper
6) New DC jack*
7) Thermal compound (often used for computer)
8) Disposable cups x6
9) Desoldering braid ($5 at RadioShack)
10) Isopropanol (not RNase Free)

  • New DC jack was puchased from DC
Mine was less than $7. You can google and find cheapest source.

Step 3: Most important key! DOCUMENTATION!

The reason why you need pen and pencil is that you need documentation. I can't emphasize enough this. You will find yourself with extra screws and non-functional laptop if you don't.

Look around and write down schematic diagram of your computer.
You will assign screw numbers and mark them into your figures as you disassemble.

Step 4: Disassemble 1

Remove hard drive, optical drive, battery, and what ever you can remove.
Remove screws and assign screw number.
Place screws into corresponding disposable cup.
Take note where and what type of screws were there.
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how to repair broken laptop screen

How to replace a broken laptop screen

A cracked screen can make a laptop unusable. Luckily, you can fix it. Bill Detwiler gives you step-by-step instructions for replacing a broken laptop LCD panel.  

Whether it's cracked or has one too many blown pixels, a broken laptop display can stop you dead in your tracks. But with the right tools, a little technical know-how, and a bit of patience you can replace a damaged LCD


Note: In this article and video, I show you how to replace the screen on an Asus UL50V notebook, which has an LED-backlit LCD. Depending on the make and model of your laptop, the internal hardware and specific steps may vary. The general process however, should be the same.

Should you try this fix?

If accidental damage is covered under your laptop's warranty, don't do this fix yourself. Get the laptop repaired under the warranty.
I also suggest you watch my earlier video on what to know before trying to fix a smartphone or tablet. It's not specifically about laptops, but the information is still relevant, and it will help you decided if you should repair the machine yourself or take it to a shop.
Lastly, understand that if you follow the instructions in this video, you do so at your own risk. Neither CNET nor any of its representatives can be held responsible for injury, damage, or loss of data.

Getting a replacement screen and tools

To begin your fix, you'll need a few simple tools and a replacement LCD screen. For tools, I recommend a screwdriver with a variety of small bits, such as a Phillips #00 and a Torx T5. It's also a good idea to have a few thin metal blades or plastic spudgers. These are really handy for removing the trim that surrounds the screen.
As for the replacement LCD, you should be able to buy one either from the laptop manufacturer's authorized parts dealer or a third-party supplier. Depending the screen, they usually cost between $50 and $250 dollars--more if it's a high-end display or you buy an OEM replacement. Regardless, you'll want to buy a new screen that matches your broken one exactly. The only sure way to do this is to remove the broken one.

1. Remove the screen bezel

After disconnecting the power supply and removing the battery, carefully examine the bezel around the screen. You'll need to remove this bezel to access the screws that hold the LCD panel in place.

On this laptop, several rubber cushions hide screws, which hold the bezel in place. I'll need to remove these cushions and the screws that are underneath.
With the hidden screws removed, I used a thin metal blade to pop loose one of the bottom corners and worked my way around the bezel with a plastic spudger.

Note: Your laptop may not have cushions or hidden screws. The bezel may simply snap onto the lid or be held in place with double-side tape. Just, adapt my instructions to fit your specific laptop. Regardless of how you do it, you'll need to completely remove the bezel.

2. Remove the broken LCD panel

With the LCD's mounting brackets exposed, you can remove the screws that secure it to the lid. Then rest the display front-side-down on the case and disconnect its cable.

If your laptop was made before 2010 and has a LCD with fluorescent backlights, it will likely have two cables. But as this is an LED-backlit LCD, it only has one.
Now, locate the manufacturer's label and note the model number. Using this information you should be able to buy an exact match for your broken screen.

3. Install the new LCD panel

Once your new screen arrives, unpack it and make sure it matches the old one.

If the dimensions, mounting brackets, and connector all match, you ready to install the screen. Connect the new panel to the cable, position the panel in the lid, and secure it using the appropriate screws.

4. Test the new LCD panel and reinstall the bezel

Before reattaching the bezel, it's a good idea to test the new panel. Reconnect the battery and power cable and turn the machine on. If the display works, you can reattach the bezel and any external screws and rubber cushions. The repair is now complete.
As fixes go, this one isn't too tough, but it does take a little patience and planning to make sure you get the right replacement screen.