Monitor Computer Repair
Computer monitor that is now being used is a kind of Super VGA or VGA to VGA adapter card HAVE BETWEEN MEMORY 256 KB to 2 MB and continue to follow developments in the developed hardware and software. Meanwhile, damage the monitor does not display the image at all, although the indicator light came on. This condition will get worse if the plus damage from VGA card (adapter) is not in the know before.
An easy way to fix such a computer monitor is to check the flow of electricity to the circuit monitors the power supply, and distribution to other circuits as follows:
[1]. Open up the back of the monitor to cover the entire component at visible and accessible by the workshop equipment such as multimeters, toolset, and other tools. Be careful to monitor the condition of this open, especially when electricity came in at the circuit, because there is an extra high voltage of 16,000 volts to 30,000 volts that are harmful to human body.
[2]. Prepare the Multimeter to measure the incoming AC voltage to the circuit monitors the power supply, a large measurable is normally 220 volts. Continue to measure the DC voltage at the power supply to remove the monitor circuit DC seluruhnya.Tegangan different on each monitor brand and size of different types in accordance with the design of each plant. Use the scheme in accordance with the type of monitor being fixed, these schemes can be obtained on the packaging of the full manual when I bought the monitor.
[3]. Measure the voltage power connectors on the horizontal output transistor, generally for 90 Volt DC in normal kondisim. This voltage representing the working conditions of a high voltage generator that can light a picture tube. If this voltage drops to half, can be sure there is damage to the horizontal circuit, replace it with a new power transistors. To replace the new power transistor should use the exact same type, except if it is not possible then it can be replaced with other transistors of the same nature and a higher voltage rating.
[4]. Turn hanger light intensity (brigthness) on the front panel monitor up to the maximum position. See reaction to the picture tube, if there is no change to check the circuit around the transformer high extra tegangangan (Flay back) on your premises (Surabaya-tile market, the Jakarta-Glodok, in Bandung-Cikapundung). This examination needs to be done to check whether the transformer was still able to generate tersebuit extra high voltage to light the picture tube.
[5]. Damage can occur in high voltage diodes rectify the charge signals into voltage DC horizontal 16,000 volts – 30,000 volts. To test the high voltage diodes used for high voltage multimeter probes specific for high voltage testing. Compare the differences in Ac voltage transformer with a DC voltage issued diode, the measured DC voltage on the diode cathode about 16,000 volts – 30,000 volts. Be careful using this high-voltage probes, touch to the wrong conductor will cause sparks.
[6]. Can also check the capacitors on the high voltage transformer connected to the ground. Remove this capacitor and measure with a multimeter, if there are leaks replace it with a new capacitor. Capacitors that are dry will change the value of capacity and the resulting change in impedance in impedance rangkaian.Perubahan will affect extra-high voltage transformer which can not produce a voltage as necessary, this will be visible on a dark screen, less light or brightness control does not work.
[7]. Besides the above problems, the monitor does not display pictures of damage caused by power transistors on the power supply, FUSE broken, horizontal output transistors, capacitors kompling output, high voltage diodes, deflection coils broken (burned), matrix RGB input and so lost. Use the full scheme monitors showing each section and check in order starting from the power supply up to the picture tube.
[8]. After all the components that were damaged in the new change, restart the computer to try to monitor the newly improved diagnosis program. Diagnosis Program is a special run at the test menu display can be made to improve the guidance computer monitor, such as check-It, QAPlus, PC-Technician, JC-Bench and so on.
Computer monitor that is now being used is a kind of Super VGA or VGA to VGA adapter card HAVE BETWEEN MEMORY 256 KB to 2 MB and continue to follow developments in the developed hardware and software. Meanwhile, damage the monitor does not display the image at all, although the indicator light came on. This condition will get worse if the plus damage from VGA card (adapter) is not in the know before.
An easy way to fix such a computer monitor is to check the flow of electricity to the circuit monitors the power supply, and distribution to other circuits as follows:
[1]. Open up the back of the monitor to cover the entire component at visible and accessible by the workshop equipment such as multimeters, toolset, and other tools. Be careful to monitor the condition of this open, especially when electricity came in at the circuit, because there is an extra high voltage of 16,000 volts to 30,000 volts that are harmful to human body.
[2]. Prepare the Multimeter to measure the incoming AC voltage to the circuit monitors the power supply, a large measurable is normally 220 volts. Continue to measure the DC voltage at the power supply to remove the monitor circuit DC seluruhnya.Tegangan different on each monitor brand and size of different types in accordance with the design of each plant. Use the scheme in accordance with the type of monitor being fixed, these schemes can be obtained on the packaging of the full manual when I bought the monitor.
[3]. Measure the voltage power connectors on the horizontal output transistor, generally for 90 Volt DC in normal kondisim. This voltage representing the working conditions of a high voltage generator that can light a picture tube. If this voltage drops to half, can be sure there is damage to the horizontal circuit, replace it with a new power transistors. To replace the new power transistor should use the exact same type, except if it is not possible then it can be replaced with other transistors of the same nature and a higher voltage rating.
[4]. Turn hanger light intensity (brigthness) on the front panel monitor up to the maximum position. See reaction to the picture tube, if there is no change to check the circuit around the transformer high extra tegangangan (Flay back) on your premises (Surabaya-tile market, the Jakarta-Glodok, in Bandung-Cikapundung). This examination needs to be done to check whether the transformer was still able to generate tersebuit extra high voltage to light the picture tube.
[5]. Damage can occur in high voltage diodes rectify the charge signals into voltage DC horizontal 16,000 volts – 30,000 volts. To test the high voltage diodes used for high voltage multimeter probes specific for high voltage testing. Compare the differences in Ac voltage transformer with a DC voltage issued diode, the measured DC voltage on the diode cathode about 16,000 volts – 30,000 volts. Be careful using this high-voltage probes, touch to the wrong conductor will cause sparks.
[6]. Can also check the capacitors on the high voltage transformer connected to the ground. Remove this capacitor and measure with a multimeter, if there are leaks replace it with a new capacitor. Capacitors that are dry will change the value of capacity and the resulting change in impedance in impedance rangkaian.Perubahan will affect extra-high voltage transformer which can not produce a voltage as necessary, this will be visible on a dark screen, less light or brightness control does not work.
[7]. Besides the above problems, the monitor does not display pictures of damage caused by power transistors on the power supply, FUSE broken, horizontal output transistors, capacitors kompling output, high voltage diodes, deflection coils broken (burned), matrix RGB input and so lost. Use the full scheme monitors showing each section and check in order starting from the power supply up to the picture tube.
[8]. After all the components that were damaged in the new change, restart the computer to try to monitor the newly improved diagnosis program. Diagnosis Program is a special run at the test menu display can be made to improve the guidance computer monitor, such as check-It, QAPlus, PC-Technician, JC-Bench and so on.
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