Your audio system will not be in a position to give out admirable sound if the amplification mechanism is faulty. An amp plays a very vital role in a given sound system where it raises an electrical signal to a level suitable for an output device such as a speaker or headsets. If you detect that your speaker is giving out a weaker sound than expected, then you are supposed to have the amp checked. Another situation where amplifier repair will be needed is when the output generated is distorted or 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.
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.
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.
Troubleshooting can proceed to other parts of the device if its power supply is fixed. A freezer will be used to look for presence of faulty components in the system. What happens is that all components are given a short burst and then the power put on. The last element to clear moisture is the one which is damaged.
The solder holding a damaged component is melted by use of heat generated by the bit of a soldering gun. Once the solder is in liquid form, a nose pliers is applied in pulling off the pins of the component. This supposed to be accomplished within a very short period of time as solder solidifies quickly once the heat source is withdrawn. The PCB is detached and the holes where the element was attached cleaned using 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.
Once replacing a spoiled component is finished, the board is fastened back to its position. The device is then plugged in and the power turned on. If the system is confirmed to be working as required, the power is put off and the covers replaced.
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.
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.
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.
Troubleshooting can proceed to other parts of the device if its power supply is fixed. A freezer will be used to look for presence of faulty components in the system. What happens is that all components are given a short burst and then the power put on. The last element to clear moisture is the one which is damaged.
The solder holding a damaged component is melted by use of heat generated by the bit of a soldering gun. Once the solder is in liquid form, a nose pliers is applied in pulling off the pins of the component. This supposed to be accomplished within a very short period of time as solder solidifies quickly once the heat source is withdrawn. The PCB is detached and the holes where the element was attached cleaned using 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.
Once replacing a spoiled component is finished, the board is fastened back to its position. The device is then plugged in and the power turned on. If the system is confirmed to be working as required, the power is put off and the covers replaced.
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