Friday, March 7, 2014

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.

Most amplification systems are easy to troubleshoot as they are constructed such that it is possible to view all components once the covers are removed. Several steps are followed when undertaking repair for an audio system. The first one normally involves removing the device form its position and placing it on a table.

A screwdriver is applied in loosening the side and top covers of the appliance. Once all components are visible, technicians normally look if there are components which are burned before they embark on sophisticated troubleshooting procedures. If the system had just failed, an odor will suggest that there is a burned component like a resistor or a transistor.

With the help of the service manual provided to the consumer in the time of purchase, it is possible to identify all the power transistors. While the device is on, a multimeter is utilized in determining whether there is voltage on pins of these transistors. The repairer is supposed to look for the fuse and then check it for continuity upon finding it. A fuse with appropriate specifications is supposed to be used in replacing the one which has blown out.

The trouble shooting can proceed to the next stage if the power supply is corrected or is found to be in good condition. In this stage, all faulty elements in the rest of the system will be identified. The technician will employ a freezer in spraying the components with cold air. The system is switched on and the component that will go for long time still frozen before the system works is the spoiled one.

A faulty element is removed using heat from a gun to melt the solder holding it in place. A needle nose pliers is the suitable tool to apply in puling the pins out of the board. Remove the screws holding the board in position so that you gain access of all sides. Cleaning of the holes left on the board is done through utilizing a solder wick.

The component removed is identified and replaced with the appropriate one as stated in the service manual. Then new element is supposed to be soldered in the same orientation and position as the earlier one. The repairer should be keen that he does not apply too much solder such that the pins short.

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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