2/27/2014

All You Need To Know Regarding 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.

Since amplification systems are constructed in a relatively simple manner, it is possible to identify the problem leading to the failure. A technician will follow certain steps at the time of executing the repair. The process begins with unplugging the faulty system and placing it on a suitable table.

The covers of the device are removed through releasing the screws holding them in place. This enables the technician executing the task to be in a position to view all the components comprising the appliance. Before, sophisticated ways of troubleshooting are applied, the technician will use eyes to find out whether he can identify any burnt element.

All power transistors in the system can be identified by use of the service manual obtained from the manufacturer. The power button is put on and a multimeter applied in determining if there is voltage on the pins of these transistors. The rest of the power ICs need to be identified and the same test done on them. The fuse will be tested for continuity and if found to be blown, replacement with a suitable one will be done.

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.

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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