Repair Your Laptop Power Cord
- Tools Required
- Get Started! Begin by ensuring that your power cord is disconnected from both your laptop and from the wall outlet.
- Open the Power Brick. Depending on the manufacturer power bricks are held closed in a variety of ways. ...
- Remove the Enclosure. Now that you have cut through the entire seam, use a flat screwdriver to pry off the top half of the plastic enclosure from the ...
- Desolder the Low Voltage Cable. Use your soldering iron to desolder the remaining piece of low voltage cable from the power brick. ...
- Solder in Low Voltage Cable. Find the good section of low voltage cable that we set aside in an earlier step and strip about 1" of the cable ...
- Assemble the Enclosure. Place the power brick into the bottom of its plastic enclosure. ...
- Add Strain Relief. Whether you salvaged the factory strain relief or not use a hot glue gun and a little creativity to fashion some strain relief of your ...
- Test and Use. If you removed your high voltage cable, reattach it now and plug it into the wall outlet. ...
Full Answer
How do I repair my laptop power cord?
Repair Your Laptop Power Cord Step 1: Tools Required. Step 2: Get Started!. Begin by ensuring that your power cord is disconnected from both your laptop and from the wall... Step 3: Open the Power Brick. Depending on the manufacturer power bricks are held closed in a variety of ways. Some have... ...
How do I replace the capacitors on my power supply?
The two output electrolytic capacitors are on the far right of the board as shown in the picture, unsolder them from the board and use the solder sucker to remove the old solder. Make note of the polarity of the old ones before you take them out and put the new ones in the same way.
How do I fix a fraying power cord?
Lets continue by unplugging the high voltage cable from the power brick (if your power supply allows for this), and by making a single cut through the low voltage cable near the fraying cord. Ensure the fraying portion of the low voltage cable is left attached to the power brick so we can remove it. Set the high & low voltage cables to the side.
What tools do you use to remove the power adapter?
It helped with the overheating issues. Tools I used: Chisel, Hacksaw, Electrical tape (or shrink tubing), wire cutters and/or strippers, flat head screwdriver (preferably sharp-ish and wide-ish), optional: two monkey wrenches for prying. Time: It took me about 1 hour, most of which was spent figuring out how to pry open the adapter box.
Can laptop power supply be repaired?
Cables on laptops, phones and tablets will ALWAYS fray. Replacing the charge on an expensive new laptop seems like an unfair additional cost, luckily it's one that can easily be avoided. So long as the cores are not damaged or exposed and the cable still works, then Sugru Mouldable Glue can fix it!
How do I fix my laptop power supply?
0:010:56How to Replace the Power Supply in a Laptop - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo all you'll need to do is just go to your manufacturer. And buy the correct one. One thing youMoreSo all you'll need to do is just go to your manufacturer. And buy the correct one. One thing you want to be very careful of is to replace it with the same amperage and voltage as the original.
How do you know if your laptop power supply is bad?
If you've plugged your computer into an outlet, but notice it isn't charging, or if your computer shuts itself down while it's plugged in, you may have a faulty AC adapter. Plug your AC adapter into a different outlet and see if your laptop charges.
Can power adapter be repaired?
Power adapters can cost hundreds of dollars to replace, but they can often be repaired for free if you already have the necessary materials. The same thing can happen to the plug on any kind of power adapter, but it happens most frequently with notebook computer power supplies, especially ones with coaxial cords.
Why do laptop power supplies fail?
The Reasons Behind Problems In Quality PSUs According to our sources, the majority of failures in quality PSUs are because of cracked MLCCs. Even a single broken MLCC can result in issues, and they can crack due to any of the following: Bad handling (i.e. improper PCB stacking during the manufacturing process)
How do you reset a power supply?
Please note: To reset the power supply you need to turn it Off first (On/Off switch to “O” position) and then after waiting a short while, turn it back on again (On/Off switch to “I” position) If your power supply still does not function properly, you can check its functionality by yourself with a simple 'paperclip' ...
How can I test if my power supply is working?
To test your PSU:Shut off your PSU.Unplug all cables from the PSU except for the main AC cable and the 24-pin cable.Locate pin 4 and pin 5 on your 24-pin cable. ... Bend your paper clip so the ends can be inserted into pin 4 and pin 5. ... Turn on the PSU.See if the PSU fan turns.
How do you troubleshoot a power supply?
Power Supply Unit Related Issues and Causes....Note!Plug the PSU power cable into a known working power outlet.Swap the PSU power cable with known working cable.Verify the PSU power cable and internal power adapters are secure connected.Check the PSU for any damage caused by overheating or excessive wear.More items...
How do you charge a laptop without the charger?
One of the easiest ways to charge your laptop is with a power bank. A power bank is basically a portable battery for your laptop. All you've got to do is connect the power bank to your laptop. The best thing about power banks is that they don't need to be plugged into an outlet while they're charging your laptop.
Why is my laptop plugged in and not charging?
Common culprits include a faulty motherboard, damaged charging circuits, and malfunctioning battery sensors. Your particular make and model of laptop will likely have its own unique issues, and a seasoned tech support operator will have seen all of them.
How do you fix a broken laptop charger?
1:476:09DIY How To Fix A Broken Laptop Charger - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo because these two size connectors don't fit this one will plug into the laptop. This one will notMoreSo because these two size connectors don't fit this one will plug into the laptop. This one will not so I'm just going to go ahead chop that off not the karate chop but with Iona maybe a knife.
How do you charge a laptop without the charger?
One of the easiest ways to charge your laptop is with a power bank. A power bank is basically a portable battery for your laptop. All you've got to do is connect the power bank to your laptop. The best thing about power banks is that they don't need to be plugged into an outlet while they're charging your laptop.
Why is my charger not working?
Troubleshoot your cable, charger, outlet & case Check that your cable and charger are working. Try them with another device. Check that the cable is securely connected to the charger and to your phone. Check that there's nothing in the port of your phone, like dust or lint.
Step 1: Set Up and Evaluation
Tools I used: Chisel, Hacksaw, Electrical tape (or shrink tubing), wire cutters and/or strippers, flat head screwdriver (preferably sharp-ish and wide-ish), optional: two monkey wrenches for prying. Time: It took me about 1 hour, most of which was spent figuring out how to pry open the adapter box.
Step 2: Break the Box: Getting Into the Adapter
It took many techniques to figure out how to open up the adapter box. The plastic was too weak to crack open w/ just a screwdriver. It just scratched with pressure, while the seam remained firmly bonded. So, I managed to create a deep groove around the entire seam w/ a chisel.
Step 3: HP Adapter Insides
This is the precious inside. Top view and bottom view. I pretty much didn't open up any further than this and I tried to avoid any damage to any parts inside.
Step 4: Fixing the Cord
The cord was coiled up slightly inside the box. I pulled it out all the way. Cut the cord at the end of the rubber spring thing (aka "strain relief") where the cord was breaking. Then I tried stripping off the "strain relief" w/ pliers...
Step 5: Close Up Shop, May Add Reenforcements
Finally, I got to shut-er up. Unfortunately, I didn't have the benefit of an adapter box that locked shut or was fused or glued shut, so I got clever with some duck tape and Black e-tape for finishing. Some commenters have innovated and closed up the adapter box w/ a glue-gun.
What is the best tool to use to hold a power brick?
1. Vise (or other means for securely holding your power "brick") 2. Soldering Iron (and solder) 3. Multimeter (not strictly needed, but its always better to check your work) 4. Flathead Screwdriver. 5.
How to remove jacket from cable?
The easiest way to remove the jacket is to carefully cut around the circumference of the cable with a utility knife then pull the jacket off and discard. Use your wire strippers and strip away 1/2" of the insulation from the inner, insulated conductor. It's likely around 16 AWG wire.
Step 1: Check the Output Waveform and Schematic Diagram
Looking at the output waveform as shown here, it can be seen that there are only approximately 10 volts of DC with spikes every 22 milliseconds riding on top. The output is supposed to be at least 19 volts with millivolts of AC component riding on the DC.
Step 2: Dismantle the Adapter
Wait a few minutes for the input capacitor to discharge and take the adapter apart and gently pry up the circuit board from the inside of the bottom case. Make note of where all the main parts are as shown in the above diagram.
Step 3: Remove the Two Output Capacitors and Solder in the New Ones
The two output electrolytic capacitors are on the far right of the board as shown in the picture, unsolder them from the board and use the solder sucker to remove the old solder. Make note of the polarity of the old ones before you take them out and put the new ones in the same way.
Step 4: Reassembly and Testing
Before you put everything together, check and recheck your work. Double check the input wires from the line cord where they connect to the board. Check the output wires where they connect to the board. Once you are satisfied that everything is OK, plug in the charger and look at the output.
Step 5: Conclusion
Once I had taken the output electrolytic capacitors out of the circuit, I could see that one of the capacitors had physically burst at the bottom. This is caused by the buildup of gasses within the electrolytic eventually causing it to burst rather than exploding.
7 Comments
Hello! I need help to fix an ASUS laptop charger Ref: EXA0904YH which delivers only 3.9 volts instead of 19 volts. Could it be the output electrolytics? Thanks. Sham.
