How do you repair a laptop charger cord?
Tools Need:
1. Vise (or another device for securely holding your power “brick”) (or other means for securely holding power “brick”)
2. Soldering Iron (and solder)
3. Multimeter (not strictly needed, but it’s always better to check your work)
3. Phillips screwdriver
5. A wire cutter or stringer
6. Multipurpose Knife
7. Heat gluing tool
8. Super Glue
9. Electrical tape or heat shrink tubing (not pictured)
Start now:
Make sure your laptop’s power cord is unplugged from the wall outlet as well as from your laptop before continuing. I’ll start calling the end of the cable that plugs into your laptop the “low voltage cable” and the end that plugs into the wall the “high voltage cable” from this point on. Hence ICFix Service provides Smartphone repair courses in Chennai.
Open the Power Brick:
Depending on the manufacturer power bricks are secured closed in a variety of methods. Some are fastened with screws, while others are glued, have locking tabs, or are even welded. You can choose how to open your power brick at your choice, although the bulk of them that I have seen were either bonded or welded.
Start by clamping or vising a power brick in order to open one that has been bonded or welded. Now, repeatedly cut along the seam with a sharp utility knife until you have pierced the outer plastic shell. To prevent harming the electronics, you must stop cutting as soon as you have cut through the plastic. Give it some time. In this step, patience pays off. Usually, it takes me at least 15 minutes to carefully cut through the seam. At a time, I concentrate on one side of the brick. Neither the high voltage cable connector nor the low voltage cable has I ever had to cut around. Just keep dividing the four sides along the long, horizontal seam.
Take Off the Cover:
After cutting through the entire seam, peel the top half of the plastic shell away from the power brick using a flat screwdriver. Cutting should be simple if you are patient and take your time. Remove the top of the plastic shell, then detach the power brick from the bottom. Put the whole plastic enclosure aside and come back to it later. You should be left with a power brick that is empty.
Remove the Low Voltage Cable Solder:
Desolder the last section of low voltage cable from the power brick using your soldering iron. Desoldering should be done on two connections. Make sure to record which color wire goes where as you remove each one one at a time. The links in this example are highlighted in yellow circles. Don’t touch anything else, please!
If you have a lot of motivation, you might try to save the strain relief from the low-voltage cable. Using a tool knife, we just carefully cut along its long axis to remove it. When sealing the plastic power brick housing, remember to install it on a good low-voltage cable if you decide to claim it.
Low Voltage Cable Soldering:
Locate the high-quality low-voltage cable that was previously placed aside and take about 1 “of the inner conductors from the cable jacket. The simplest approach to removing the jacket is to use a utility knife to carefully cut around the cable’s perimeter, then just peel the jacket off and throw it away.
Use your wire cutters to remove half of the wires “of the inner, insulated conductor to the insulation. Most likely, the wire is 16 AWG.
There is only one insulated conductor in this low-voltage cable. If your conductors are both insulated, strip 1/2 of them “also from the second conductor. As our second conductor is not currently protected, we will use a 1/2 “electrical tape or a heat shrink tube.
The good low-voltage cable section can now be soldered back into the power brick’s connections. Ensure that the appropriate wire from the cable is connected to the appropriate pad on the power brick.
Put the enclosure together:
Insert the power brick into the plastic enclosure’s bottom. The top half of the plastic enclosure should be securely seated over the power brick after applying a bead of super glue across the whole seam that we previously tore apart. The enclosure may need to be clamped until the adhesive has fully hardened.
Add some stress relief:
Use a hot glue gun and a little imagination to create your own strain relief, whether you were able to save the factory strain relief or not! In general, bigger is preferable, but make sure your creation is firmly fastened to the power brick container.
Test and Apply:
If you unplug your high-voltage cable, you should do so right away and connect it back in. Check the voltage of the concentric power plug at the low-voltage cable’s end using your multimeter. You should obtain a measurement that is close to the Power Brick’s nominal voltage rating. The nominal rating in this instance was 19V. The power brick’s plastic casing should have a fine print listing your nominal voltage there.
I strongly recommend checking with the ICFix Service before enrolling in any courses. Contact: +91 81482 11211.
Recent Comments