Actually, circuit and boards usually are made up of fiber. it can be also said two kinds of glass and plastic. the smartphone circuit consists of plastic fiber. fiber is a good electric conductor that current never Burn It.
What is the Fiber Circuit of Smartphone?
phones on the market have a fiber circuit with electronic components in it
plastic fiber
you can see the picture the smartphone has green circuit is the copper wire is placed in the mid it cannot be seen but it exists you can see the LCD Jack so this is copper layer the fiberboard that consists on copper print
copper print
What is Copper Print on Latest Smartphones?
you can see this speaker which is attached to this point. This is print, the point of the wire is attached here and another point is punched by the machine when it becomes Golden in color and placed with any ICs or apart so when you put the battery inside the smartphone different ICS get active for working whats speaker IC do to it actually create flow of current sense to the parts and then this print to spend in the fault diagnosing process is the reverse action that is first we check the print and we see the component then IC so the print reflects every part of the phone this is called PCB mains printed circuit board PCB exists on every smartphone.
Golden in color
if you want to Learn to identify original mobile phone spare parts with the help of Phone Parts Diagram read this blog post
The printed circuit board cannot be repaired in two situations.
when it burns
and second When It Breaks
when it breaks the copper wire gets disturbed otherwise,
copper wire inside
in the burn case,
burns
we see that how much it burns if it burns too much then you cannot repair it.and if it burns just little more then you will try to fix it.
Q: How Can It Be Fixed?
A: we will know it by using the meter!
multimeters
you will have to keep the multimeter on continuity if the phone is short it will give reading from both sides on the battery connector of the phone.
battery connector of the phone
and if the phone is not short that you will not get reading on multimeter form the battery connector on the phone.as I told you the meter should be in continuity and if you are using the digital meter then put it on continuity buzzer.
digital meter continuity buzzer
placed the black lead from the meter on the positive side of battery connector and red lead on the negative side if reading shows
same reading both side
by the opposite banking then it means there is a shortage in the circuit remember one thing! all the reading shows the amount of burning area in the circuit for example if the opposite shows
previous reading
it means the phone is 35% short or burn Similarly if opposite shows more than
it means the phone has been burn more than the previous reading if reading is zero from battery connector both sides then phone circuit cannot be repaired ever.
Learn how to read it. At first, you might think that it is hard to do so, You are not going to be experts and master in smartphone repair as long as you don't know how to read it. Many of mobile phone repairman exist nowadays that do not have any knowledge about reading it. They always rely on finding free solutions over the internet and forums. Those people who give free solutions are those people who know how to read a schematic diagram. Now here's your chance to learn and do not rely on others, and be an expert and master troubleshooter when it comes to hardware problems
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