Modern electronic technology is highly reliable. Nevertheless, sometimes you still have to deal with a situation where, as a result of one or another malfunction, the printed conductors on the board burn out. Further operation of the device is impossible without restoring damaged tracks.
Instructions
Step 1
Burnout of the tracks clearly indicates that an unacceptably high current flowed through them. Therefore, first of all, you should take care of finding out and eliminating the main malfunction. Only after that you can proceed to the restoration of printed conductors.
Step 2
Let's say right away that there is usually no need to reconstruct the original factory appearance of the conductive paths, so we will talk about how to establish the normal operation of the device. The solution here is obvious - the burned-out sections of the printed conductors must be duplicated with wires of the appropriate cross-section.
Step 3
Before starting work, carefully study the location of the burned-out tracks, if necessary, check the circuit diagram of the device. Remove the remnants of the tracks with a sharpened knife, razor blade or other suitable tool. Carefully clean the burnt-out areas of the board, in no case leave charred areas.
Step 4
We proceed directly to the restoration. Prepare a suitable insulated wire of the required section - it should be comparable to the section of the burnt track. It is advisable to take the wire solid, not stranded - in this case, the installation will turn out to be more accurate. Estimate how long the wire should be. It can be soldered both to the terminals of the parts that were connected by the burnt conductor, and to the surviving sections of this conductor. In the latter case, the edges of the track must be carefully cleaned with a knife, then soldered with rosin. Strip and tin the edges of the wire in the same way.
Step 5
When restoring the track, gently bend the wire as needed. Accuracy and thoroughness of installation is the key to successful repairs and subsequent reliable operation of the device. The situation is unacceptable when the wires are loose, the soldering is done somehow, near the place of soldering, drops of solder frozen in different places are visible. Dirty, ugly, sloppy work leads to the fact that the device generally refuses to work or is unstable.
Step 6
Having restored the conductors, once again carefully check the installation for errors. Using a magnifying glass, check the condition of the tracks close to the repair site - droplets of solder could get on them and cause a short circuit. In "doubtful" places, scratch the space between the tracks with a needle or the tip of a sharp knife. If everything is in order, assemble the device and safely turn it on - it should work.
