Repairing Samsung LCD Monitors
Nowadays I found that the Samung LCD Monitors like Syncmaster 943nx, 932 B plus, 943 Bwx and etc that was manufactured in the year 2008/9/10 a lot coming in to my workshop for repair. The complaint was usually no power, power blink and display shutdown. It seems that this batch of LCD monitors have a common fault. The cause of the above problem were bad filter capacitors (usually you have to replace few of them) and bad high voltage transformer. If the high voltage transformer have problem it would cause display to shutdown. One of the secondary resistance value will shoot up in ohms causing the feedback circuit to shut the display down.
Just compare the secondary winding ohms value and you will know if the high voltage transformer is good or bad. The Samsung boards was not complicated and it is a blessing to my company because the problems can be easily solved within minutes! If you found the e-caps that is rated 820uf 25 volt you can just put in 1000uf 25 volt and you are done.
If you or your company is not repairing LCD Monitors I suggest that you include this equipment in your workbench because LCD Monitors generally are easy to fix. The only drawback is the LCD panel and some of the mainboard or parts that cannot be found in the market. Almost 60 to 70% LCD Monitor problems are due to bad electrolytic capacitors and the rest of the problems are power, inverter, backlight, mainboard and LCD panel.