LCD Troubleshooting Samsung 153V power as a CRT type of troubleshooting. This monitor came with no sign of power. When you are first time repairing this kind of power, I suggest you remove, for the first time the switch mode power transformer. Then test every single component of the primary area before proceeding to examine the secondary section. You have to be good in testing basic electronic components to detect the error.
They can be searched at any timethrough my site if you do not know how to test basic electronic components. If you do not know the proper way to check, you can lose a component failure and if it is unable to solve the problem. After careful consideration of all components of the power section, I found the filter capacitor does not have any meter reading with digital capability (open), the fuse type two round even minor, 1N4744 15 Volt Zener diode, and finally , the power icTOP247F blown! Test the primary winding of switching power supply with Dick Smith flyback tester shown green bar, displayed a good resolution.
What are we left here were the secondary diode and filter capacitor. Upon checking with the ESR meter and analogue display, all to be found in good condition. Other areas such as the motherboard and inverter board also looks good (rare power outage affecting these two groups). Now we have confirmed that only five components found to be defective. One by onecomponents have been replaced (with the exception of a backup) and just before going on the network, make sure to include a 100-watt bulb to light the live-ac-line see photos on my site. Once finished, you can then continue to look on the LCD monitor switches for lamp brightness.
If it is very light, this indicates that there is still a short circuit somewhere in the power stage. If it is dark or dark enough, you can now place the red probe on the secondary sideto verify that all present at their respective lines cc. If there are continuing tensions in the output, you can turn off the power, the discharge of filter capacitor (for safety), remove the bulb and reconnect the new backup to its original position.
You are now a hundred percent sure that the display lights will not break when you turn it on. Among other things designed filter capacitor to 105 degrees and can not give you replace it with 85 degrees Celsius, or you can open againafter using for a few weeks or months. Ventilation in the LCD monitor is not as good as the cathode ray tube monitor, because the power is completely covered by a large aluminum pot and you can get hot pretty quickly. The bottom line is that if you repair the Samsung 153V LCD power or other brand of LCD monitor, the method is the same. Those who know the problem with the supply of electricity in this monitor and a common mistake in the future you can cope with this brand of power in the shortest possible time. Ameasuring electronics is not that difficult, but will keep the original parts such as IC power will consume a lot of time.
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