Electronic Schematics Diagram-The Four commonly asked questions.
Discover How You Can Test Electronic Components Like A Professional
I came across quite a
number of questions about electronic circuit schematics diagram.
Most of the question asked are:
a) Do we really need a schematic diagram in order to repair any electronic
b) Will schematic diagram help us to repair faster?
c) At where we can get a particular schematic diagram?
d) How to read schematic diagram ?
Well, the answers is as below:
a)-Theoretically yes, practically not necessary, it all depends on how good
in electronic repair knowledge. For a beginner it is a 'must' for you to
schematic diagram, as you gradually gained more knowledge you will
automatically depends less
on schematic diagram. You will definitely need a schematic diagram when you
come across a new
designed or technology. For example, when comes to crt monitor repair i
schematic because i already understood most of the circuitry and section in
a crt monitor.
The new technology such as lcd or tft monitor makes me have to temporarily
relies on schematic
diagram. As my knowledge of lcd monitor repair grows, i will gradually
depends less on the
schematics. May be my situation is different from yours because i'm
concentrating only on one
type of equipment. I've seen quite a lot of repairers in my country that
repair many types of
equipment such as tv, video, vcd, dvd, amplifier, hi-fi, fax, laser printer,
microwave and so
forth. Most probably they need schematic diagram to keep them up to date on
each of the
b) If you have a particular schematic diagram for that particular equipment,
time can be reduced to half! Unfortunenately many manufacturer do not
release their equipment's
schematic diagram. If you depends on too much of schematic you will be stuck
on how to repair
that particular equipment. Why with schematic diagram you can repair any
Because a schematic diagram shown you all the part list, waveform, voltages,
explanation how that particular equipment work, block diagram, schematic
design, component's part number,
electrical schematics symbols, substitution, modification (if have) and
electronic schematic symbols and etc. Assuming you have a power supply
section blown and you could not recognize the component part number, but
with schematic you will be able to find the exact part number and finally
repaired the equipment.
c) If you work in the equipment's factory or their distributor you will have
the schematic diagram
for the model that they sell. Any under warranty unit that comes in you will
be able to diagnose
and repair the equipment fast. This will increase the company's reputation
and customers will
recommend to their friends about the quick service of that particular brand
of equipment. You also
can get schematic diagram in the form of a book from local electronic shops.
This is usually
a compilation of few brands and model of a specific electronic equipment. Tv
or television schematics diagram are easily to get but computer monitor
schematics and radio amplifier schematics is a little bit harder to find.
If you have the budget get one of the book. Third, as most of us already
know that you can download free electronic schematics diagram from the
internet. Free tv schematics is easily found on the internet. You may also
buy it the 'CD' format. This investment will usually pay back in the
d) As how to read schematic diagram, i'm unable to show you thru article
because you do need a real schematic diagram in order to make you
understand. Reading schematic is not that difficult,
provided you have some basic electronic knowledge. I have a few suggestions:
-Ask from a friend who is in the repair line
-Take short courses on electronic repair and ask the lecturer
-Buy books from your local bookstore about the subject "how to read
-Buy schematic diagram and learn on your own (this will take sometimes but
-Fix some project kit using the electronic kit schematics given. This will
add to your knowledge
Conclusion-In order to become a successful electronic repairer you must
understand how to read