Troubleshooting Computer Screen flyback transformers isn’t difficult once you learn what’s inside the flyback. Typically for a monitor flyback transformer, it consists of the casing, winding, divider, pins, high voltage cable, anode cap, epoxy and high voltage capacitors. Among all, the internal capacitor gave problems to the most. If this capacitor value outside or short circuited, the monitor could have no high voltage and high voltage shut down and occasionally even blow the electricity section. That is why before you desire to check any power problems or horizontal out transistor (HOT) that had developed a short circuit; you must always verify first that the flyback transformer internal capacitor is functioning. Otherwise, after the replacing of parts, the computer screen would not work or occasionally exactly the same elements that you had transformed would blow.
Although every monitor flyback transformers have different designed, the approach to measuring it’s the same whether it’s etc., Likom and a Samsung, Philips Connect the digital capacitance probe from the anode cap to the bottom pin as shown in the picture. Some 21″ monitor flyback have the reading of 6 nanofarad.
A superb dynamic focus capacitor generally has the capacitance value from 0.5 to 1 nanofarad. If these capacitors values run, you may have some problems adjusting the focus. To put it differently, you only can not tune to a sharp image no matter how hard you have tried it. It is possible to analyze these focus capacitors that are dynamic by connecting a digital capacitance under the flyback divider in the flat or vertical focus wire to one of the two pins.If you are looking for more information on capacitors, please visit:www.sh-jinpei.com.
Many screen repairers attempted to fix a flyback transformer without success. Some was called by it . The reason for their failure in repairing the flyback is because of the bleeder resistor inside the flyback. Some technicians called it . If you just remove the flyback internal capacitor pin and if that flyback have a bleeder resistor inside it, the screen will go into high voltage shutdown mode. Be mindful if you want to do refurbishing flyback.
Get Screen flyback transformers schematic diagram to allow you to get comfortable with the components inside the flyback. See how bleeder resistor and the internal capacitor are connected. How secondary winding and a primary are drawn and really get to know distinct flyback manufacturers’ design also. In this article one would not show you the best way to remove flyback transformer since I expect you already knew the best way to take it out.
Conclusion- practice more frequently on use a dick smith lopt tester to assess the winding, and how to analyze a flyback transformer. It wouldn’t take long for you to become quite good in checking flyback transformer. Incidentally, testing the internal capacitor with a capacitance that is digital isn’t 100% exact because the internal capacitor have the output voltage generated by your meter only in couples of volt and the voltage rating of about 30 to 35 kilovolt. The finest flyback transformer examiner on earth is really the TV the Monitor or itself. When you switch on, if the screen working then the flyback is in good condition and if you heard “tic”-“tic” or arcing sound, most probably you need to check or refurbish the flyback transformer. Have a fantastic day my friend!