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All You Need To Know Pertaining Amplifier Repair

By Lisa Williamson

In a situation where the amplification mechanism is faulty, then your sound system is likely to give a poor output. The work of an amp is to raise the level of an electrical signal to a level that can be fed to the targeted output device which can be a speaker or a headset. This means if the speaker is producing a weak sound, the problem can be traced back to the amp and correction made. Amplifier repair may be required also if the output is distorted or it is not clear.

Normally, it is easy to troubleshoot amplification systems since most of them are constructed in a way that you can view all internal components and identify the faulty one. A number of steps are followed in accomplishing repair of an audio system. The first thing is to unplug the device from the wall and place it on a spacious table.

Screw driver is utilized in loosening the covers so that they can be removed. Complicated methods of troubleshooting are applied once the technician cannot identify any burnt component using his eyes. An odor will be noticed if there is a burned transistor and the system is opened immediately it stops operating.

Use the service manual provided by the manufacturer to identify the power transistors. While the power is on, a multimeter is used to check whether there is voltage in the pins of the transistors composing the device. The same should be done for all power ICs identified. The repairer will look for the fuse and test it for continuity.

Once the power supply is tested and found to be working, troubleshooting proceeds to the next stage. This involves finding out whether there is any component in the other sections that is faulty. A freezer is used to spray the components, one after another, with a short burst. The system is then put on and the component that is last frozen before the device begins to function is the faulty one.

When removing an element that is found to be spoiled, a heat gun is used to melt the solder holding it onto the board. After melting is achieved, a pliers is applied in pulling the pins from the PCB. It is required that you get the board out of its position so that you can access both sides. The holes left behind are cleaned with help of a solder wick.

Through use of the manual, it is possible to identify the component that is not working. A new one is then acquired and soldered at the same position and orientation. While inserting the pins of the element into the holes, one should be careful so that he does not bend them. Only enough solder should be applied so that the pins are not short. A side cutter is applied in clipping off the excess pins so that they do not protrude from the underside of the circuit board.

The circuit board can be fixed back to its position once the spoiled component is replaced. The power button of the device is switched on to test the system. After the system is found to be functional, the power is switched off and the casing replaced.

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