Many modern electronic household appliances use flexible multicore stubs that connect separate movable and fixed relative to each other components of the device. Often these trains are torn. This occurs, as a rule, in places where the loop is bent. The operability of such a loop can be restored.
Necessary
- - thin solid insulating plate (preferably polyamide (kapton));
- - glue "moment";
- - alcohol;
- - bow rosin;
- - a soldering iron with a capacity of 10 - 15 watts;
- - tweezers;
- - school microscope;
- - scalpel;
- - varnished wire with a diameter of 0.15 mm;
- - brush;
- - low-melting tin solder;
- - side cutters.
Instructions
Step 1
Prepare an alcohol-rosin flux before repairing the loop. To do this, grind some rosin into a powder. Dissolve the rosin in alcohol in a ratio of 1 gram of rosin to 6 grams of alcohol. While stirring alcohol, achieve complete dissolution of the rosin.
Step 2
Glue the damaged section of the cable with the "moment" glue to the insulating plate. This plate will provide mechanical rigidity in the damaged area and in the future will not allow the train to break in the same place.
Step 3
Place the damaged section of the ribbon under a school microscope. Carefully use a scalpel to remove the top layer of insulation from the conductive tracks near the damaged area. Clean the tracks at a distance of 1–1.5 mm from the break.
Step 4
Using a soft brush, apply a small amount of rosin alcohol to the strips that have been stripped of insulation. With a well-tinned, heated soldering iron, touch this area on the loop. The amount of solder on the tip of the soldering iron should be minimal, otherwise the solder may flood and bridge the adjacent conductive paths of the loop.
Step 5
Carefully clean the wire with a diameter of 0.15 mm from the varnish with a scalpel. Apply a rosin alcohol solution to it. Tin the wire 15 - 25 mm from the edge. Carefully solder the tinned wire to the first damaged track from the end of the loop.
Step 6
Bend the section of the wire that is soldered to both sides of the damaged track so that the middle of the wire is raised 1 - 1.5 mm above the loop between the connected points of the damaged area. In this case, the wire will not be stretched after the soldering point of the loop has cooled down. Gently bite off the excess wire near the second soldering point with side cutters. Start soldering the loop from the damaged area farthest from you.
Step 7
If the break occurs at the place of the bend between the moving sections of the loop, then it should be increased. To do this, select a piece of the train that is suitable in length, width, as well as in the number and width of the tracks. It will be used to make the insert. Carefully and evenly cut across the train in the damaged area. Strip, connect and solder each half of the ribbon cable to the insert as described above. Make sure that the first track of the beginning of the loop coincides with the first track of the second half of it. Insulate with glue "moment" the bare sections of the wire at the soldering points of the loop.
