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Have you ever come across power problem where onceyou switch on the power supply and the fuse blow? Youhave checked all the components in the power (primary)and secondary section and all the component...
Testing diodes is different from testing a resistor because you need a skill to do it.If you do not know or wrongly test a diode you will be unable to repair the equipment.
A bad diode you think it i...
... more and more monitor comes in with flyback ... ... Testing flyback ... are not ... if you ... follow the ... In many cases, the flyback transfor
Many technicians are confused on how to really read a zener diode code. There are many types of code number indicated on it's body. The look and shape of a zener diode sometimescan be mistaken to be a...
All picture tubes, whether monochrome or color type are identified by a specific code consisting of numbers and letters. The codes are different from each other because different tubes have different ...
Have you ever encountered before the problem of having multiple paper loading in your HP LaserJet 5L and 6L? Do you know that this is caused by a defective separation pad where it's rubber has worn ou...
Crystal are use to keep the frequency of the clock from drifting. If the signal from this clock stops, or is weak, or the pulses begin to vary, the electronic equipments might show intermittent faults...
If, for some reason, you can’t get an exact replacement for the transistor that you want to replace, you can refer to one of the transistor substitution guides or book, and try to identify a “near rep...
If you plan to upgrade your workshop into an Authorized Service Center, this should guarantee plenty of work and a secure future. Setting up from scratch as an Authorized Service Center is not an easy...
All capacitors have a certain amount of resistance to the passage of AC current. ESR (Equivalent Series Resistance) is the sum of all internal resistances of a capacitor measured in Ohms. An ideal cap...
A fuse is a very thin wire, which either melts or vaporizes when too much current flows through it. The thin wire may be made of aluminum, tin-coated copper or nickel. The resulting open in the circui...
EEPROM stands for Electrical Erasable Programmable Read Only Memory and also referred to as E²PROM. As the name suggest, an EEPROM can be both erased and programmed with electrical pulses. Since it ca...
Electronic servicing is, as they say, a “growth industry”. With many new electronic products and equipments reaching the market, there is a large demand for electronic repair technicians. However, wit...
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