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usually a resistor have 4 to 5 color bands,an inductors looks like a resistor but have only 3 color bands and a capacitor also looks like a resistor but there is no gold or silver color bands,even though it has a color band also...
Look up "resistor color code" online. The first two color bands are numbers and the 3rd band is how much you multiply the number by. For instance, a Red, Brown, Orange is a 10,000 ohm (10K) ohm resistor, the orange means 3, but 3 digits. If NOT totally burned-up, you can measure the resistor if you disconnect one lead from the circuit.
Go to an electronics parts shop and take the damage resistor with you.
The bands are a colour code (the first two bands indicate the first two numbers, the 3rd one is for the number of zeros and the fourth one is the accuracy of the value e.g. 5%, 10%) for the value of the resistor.
The physical size of the component gives an indication of the current that it can carry.
It is very tempting to start soldering components onto the circuit board straight away, but please take time to identify all the parts first. You are much less likely to make a mistake if you do this!
1. Components stuck onto paper Stick all the components onto a sheet of paper using sticky tape.
2. Identify each component and write its name or value beside it.
3. Add the code (R1, R2, C1 etc.) if necessary.
Many projects from books and magazines label the components with codes (R1, R2, C1, D1 etc.) and you should use the project's parts list to find these codes if they are given.
4. Resistor values can be found using the resistor colour code which is explained on our Resistors page. You can print out and make your own Resistor Colour Code Calculator to help you.
5. Capacitor values can be difficult to find because there are many types with different labelling systems! The various systems are explained on our Capacitors page.
Did you remove one side of the resistors from circuit to check them? If you leave them in circuit a blown resistor will test good as it will read the resistance from the surrounding resistors. Usually its the 3.9 ohm resistors identified bu the bands orange,white ,gold and red. and also the 150 ohm identified by the bands brown, green, brown and gold
R10 just means Resistor # 10 unfortunately this is just to make the manufacturing process easier....
However reistors are marked with their value(using coloured bars), if you can read the bars you can get a replacement for it,
and hence if you can decode the bars you will know what the value of that resistor is
Black = 0
Brown = 1
Red = 2
Green = 5
Blue = 6
Grey = 8
White = 9
therefore if you have a sequence of red green black then you have a 250 ohm resistor,
gold, silver and bronze bands on the other end of the resistor designalt tolerance and should be noted
Just hope that it was only the resistor that got toasted