Troubleshooting the LCD monitor power supply is easier than the supply of power to the CRT. And 'small and compact and usually has only one output, the 12-volts and amps vary from 2 to more than 4 amps. Some have also designed 18 to 24 volts. Nowadays most LCD power supplies on the motherboard such as the Dell E151FP LCD monitor to build, while the old type, such as the power module has been disconnected.
The power from the power module is easy to diagnose because it can replace anotherUnits of work just to be sure, is to give the power plant that problem. You can also confirm a DC power adapter to power the LCD, if the power supply is faulty. If you do not have the external power supply, you can always use this method to isolate the problem, especially the symptoms are not allowed to flash a low power consumption and performance. Using the back of the light bulb (12 volts) from a machine and connect the power output. If there is light then the power supply is fine. If it blinksor dim the power supply has a problem. Why use this method should try it? Because if shorted or leaky components in the main LCD board, it will affect the power.
By experts, most of the problems of LCD power supply, AC adapter or integrated into the motherboard were due to the failure of electrolytic capacitors (probably due to heat) in primary and secondary. Most capacitors have high ESR, causing the power supply,produce low-power, flash or no power. Typical electrolytic capacitors on the primary are 47 and 100 microfarads, 50 volts and the secondary site 1000-2200 microfarads 25 volts. Sometimes you see the capacitor is swollen upper chamber and the condenser sleeve that covered the body of a dark color such as brown have become.
The power in some of the LCD are still using the UC3842 pulse width modulation (PWM) IC. This type of integrated circuit is quite easy to findon the market, some power-IC, which is becoming very difficult to compare. Samsung 153V LCD has the power ic TOP247F to eliminate a lot easier if the power fails in this model. Some power plant, burned it, and soon after learning to clean and replace the fuse, it will work like new.
LCD resolution of feeding problems is not that difficult if you, as a power supply to work, knowing provided. If you are unsure of how to deal with the power, I urge you toread all my products in the power supply. I will continue to publish articles gives more strength to this page and hope you could drop by often to check out my website.
0 comments:
Post a Comment