In detail: DIY repair of a smartphone loop from a real master for the site my.housecope.com.
Are you familiar with the principle of connecting all movable elements to a printed circuit board in all modern mobile technologies? The connection of these elements is achieved using loops. During continuous use, this component may fail. How do I fix a flat cable on my phone? Users with no experience immediately panic and go looking for the nearest service center. But in a workshop, services cost quite a lot of money, and who loves unforeseen costs? This article will help those users who have basic knowledge of working with modern technology. Today we will try to repair the train by our own efforts.
Modern models of mobile phones very quickly lose their former relevance, because they are being replaced by new versions of devices. Not every user is ready to give a large amount of money in order to acquire a brand new powerful smartphone. The components for such devices are not very expensive, but their installation is a rather expensive undertaking.
Is it possible to repair a loop with your own hands? If you take apart your gadget, you will see that the contact pads are attached directly to the display. On the back of the case, these parts are connected to the printed circuit board in a specific sequence.
Important! In order to determine the malfunction, you need to get a brand new multimeter, in which an ohmmeter will be built to measure resistance. In the same service centers, the connecting components are bent in opposite directions to identify problematic contact.
Video (click to play).
If, during the diagnosis, other problems have emerged, we advise you to eliminate them at the same time. Perhaps, in this case, our other publications will be useful to you:
To carry out repairs at home, you need to prepare well and find special materials and tools, such as:
Flat screwdriver.
Magnifying glass.
Needle.
Alcohol solution.
Sandpaper.
Soldering Station.
A thick layer of polyethylene.
Adhesive tape and multi-core MGTF cable.
Important! Think a few times before embarking on restoration work. All manipulations are not particularly difficult if you have ever done something like this. If there is no one hundred percent certainty of success, then we recommend that you still find a service center where qualified workers will take matters into their own hands.
In order to repair the telephone cable, you need to follow these steps:
Pull out the back cover of your device and remove the battery.
Now you need to unscrew the fixing screws using a flathead screwdriver.
Remove the main PCB and the plastic cover that is under the shield. The last component is attached to double-sided tape.
Next, you need to look for a break on any of the tracks. To do this, it is worth getting rid of the insulation with a needle.
Important! Use a magnifying glass to facilitate the procedure.
We take a soldering iron in our hands and wind a piece of copper wire on its tip. A component with low power settings (somewhere between 20-25 watts) is best suited. We solder the remnants of the wire insulation.
The edge that has just been stripped must be prepared for connection to the board.
Important! If, for some reason, several conductors were damaged at once, then we repeat the last manipulation for each of them.
If you have finished with the previous point, then proceed to the soldering itself.We solder the edges to the PCB and carefully inspect the entire circuit for any gaps between the tracks.
Take a thermal film or a layer of polyethylene in your hands, wrap the edges of the soldered loop with it in at least one layer. Warm up the whole thing until you melt the film, thereby gluing it to the tape. An iron is perfect for this action, but you need to take into account that the whole procedure must be carried out with extreme caution.
It so happens that the track breaks not at the edges, but in the very center. To fix this problem, it is best to duplicate this track using pieces of wiring conductor.
Now we assemble the mobile device in reverse order and test it for operability.
Important! Also, you should know that you can make a loop yourself. To do this, you need to lay the conductors on the layer of an ordinary medical plaster.
How can I repair the telephone cable in another way? Everything is very simple.
Recovery work can be carried out as follows:
First, grind a small amount of rosin to a powder state and dissolve in an alcohol solution. Use a one-to-six proportion to create the mortar.
Now we take the good old Moment glue in our hands and glue the damaged area onto an insulated plate. Then you need to put this compound under the most common technical microscope, which everyone used in biology lessons at school.
We proceed to the removal of insulation. A scalpel or small knife can be used as a tool. We remove somewhere 1.5 mm of the wire at the break point. Next, you need to apply a little of the solution that was in the first step to the section of the tape. Use a brush to apply the mixture. After applying, touch the tip of the soldering iron to this section of the loop.
Remove the varnish with a scalpel and thoroughly lubricate this section with a solution of rosin and alcohol. Tin the conductor 25mm from its edge and carefully solder it to the outermost track of the outermost stub.
Important! For convenience, it is better to raise the wire in the middle above the damaged parts.
We bend the section of the wire, which we connect the two sides of the non-working track and bite off the excess parts that were formed during work with pliers. It remains to solder the ribbon cable to the board.
If there is a need to “build up” the loop, then use another segment of the loop with the appropriate geometric dimensions. Cut the component perpendicular to the damaged area.
We clean, connect and solder both halves. We isolate the bare sections of the wire and assemble the mobile phone in reverse order.
