153V Samsung LCD Monitor Power Supply Repair Guide
Troubleshooting Samsung 153V LCD power supply is just like troubleshooting these crt type. This monitor came in with no energy symptom. In case you are first time repairing this sort of power supply, I recommend you to first remove the change mode energy transformer. Then take a look at each single part within the primary part, earlier than you proceed to verify the secondary section. You have to be good in testing primary digital parts to be able to detect the fault.
You can always flick through my website just in case you do not know how you can take a look at primary digital components. In case you have no idea the precise technique to check, you would possibly miss out a foul part and this can lead you not able to remedy the problem. After carefully checking all of the elements in the energy supply section, I found the filter capacitor do not have any reading using digital capacitance meter (open) , the 2 round sort fuse also open circuit, 1N4744 15 Volt zener diode quick circuit and lastly the ability ic TOP247F blown! Testing the switch mode power supply primary winding with a dick smith flyback tester shown green bar which indicated good winding.
What we left here were the secondary diode and filter capacitor. Upon checking them with analog meter and esr meter, discovered all of them to be good condition. Other space like important board and inverter board also seems okay (Energy failure hardly ever have an effect on these two circuit). Now we now have confirmed that only 5 components discovered to be faulty. One by one the elements were changed (except one fuse) and simply earlier than you turn on the power supply, be sure you join a 100 watt light bulb throughout the live ac line-confer with the photo at my website. Once it is accomplished you possibly can then proceed to modify on the LCD monitor to have a look at the brightness of the bulb.
If it very brilliant, this implies that there are still brief circuit someplace within the energy section. If it dim or totally goes off, now you can place your purple probe to the secondary facet to verify if any dc current at their respective line. If there are DC voltages current on the output, you'll be able to switch off the facility, discharge the filter capacitor (for security functions), remove the sunshine bulb and connect again the new fuse to its unique location.
You are actually hundred p.c positive that the LCD power provide will not blow as soon as you turn it on. By the way in which the filter capacitor is rated at a hundred and five Celsius and you can not replace it with the eighty five Celsius type in any other case it might open up once more after utilizing for couple of weeks or months. The ventilation in LCD monitor is not so good as the cathode ray tube monitor, because the ability supply is totally covered by a big aluminum plate and it may well get sizzling pretty fast. Conclusion, whether or not you are repairing Samsung 153V LCD energy supply or other brand of LCD monitor, the process is the same. Who is aware of the facility downside on this monitor is a typical fault and in the future you may tackle this model of energy provide in the shortest time. To measure electronic parts will not be that troublesome, but to get the original parts like the ability ic will eat you numerous time.
153V Samsung LCD Monitor Power Supply Repair Guide
Troubleshooting Samsung 153V LCD power supply is just like troubleshooting these crt type. This monitor came in with no energy symptom. In case you are first time repairing this sort of power supply, I recommend you to first remove the change mode energy transformer. Then take a look at each single part within the primary part, earlier than you proceed to verify the secondary section. You have to be good in testing primary digital parts to be able to detect the fault.
You can always flick through my website just in case you do not know how you can take a look at primary digital components. In case you have no idea the precise technique to check, you would possibly miss out a foul part and this can lead you not able to remedy the problem. After carefully checking all of the elements in the energy supply section, I found the filter capacitor do not have any reading using digital capacitance meter (open) , the 2 round sort fuse also open circuit, 1N4744 15 Volt zener diode quick circuit and lastly the ability ic TOP247F blown! Testing the switch mode power supply primary winding with a dick smith flyback tester shown green bar which indicated good winding.
What we left here were the secondary diode and filter capacitor. Upon checking them with analog meter and esr meter, discovered all of them to be good condition. Other space like important board and inverter board also seems okay (Energy failure hardly ever have an effect on these two circuit). Now we now have confirmed that only 5 components discovered to be faulty. One by one the elements were changed (except one fuse) and simply earlier than you turn on the power supply, be sure you join a 100 watt light bulb throughout the live ac line-confer with the photo at my website. Once it is accomplished you possibly can then proceed to modify on the LCD monitor to have a look at the brightness of the bulb.
If it very brilliant, this implies that there are still brief circuit someplace within the energy section. If it dim or totally goes off, now you can place your purple probe to the secondary facet to verify if any dc current at their respective line. If there are DC voltages current on the output, you'll be able to switch off the facility, discharge the filter capacitor (for security functions), remove the sunshine bulb and connect again the new fuse to its unique location.
You are actually hundred p.c positive that the LCD power provide will not blow as soon as you turn it on. By the way in which the filter capacitor is rated at a hundred and five Celsius and you can not replace it with the eighty five Celsius type in any other case it might open up once more after utilizing for couple of weeks or months. The ventilation in LCD monitor is not so good as the cathode ray tube monitor, because the ability supply is totally covered by a big aluminum plate and it may well get sizzling pretty fast. Conclusion, whether or not you are repairing Samsung 153V LCD energy supply or other brand of LCD monitor, the process is the same. Who is aware of the facility downside on this monitor is a typical fault and in the future you may tackle this model of energy provide in the shortest time. To measure electronic parts will not be that troublesome, but to get the original parts like the ability ic will eat you numerous time.
Print this page
No comments:
Post a Comment