Troubleshooting the LCD monitor power supply pack is easier than the CRT monitor nutrition. It 's small and compact and usually has only one exit, which is 12 volt and range from 2 ampere to over 4 amps. Some have designed 18 to 24 volts too. Today most LCD power supplies can be built into the main board, such as Dell E151FP LCD monitor, while the older type have been separated as a power supply.
The Power Pack module is easy to typediagnose, because you can substitute another working group just to make sure that the power supply problems. You can also use the power of an external DC to power the LCD display to check if the battery is defective. If you do not have the external DC power supply, you can always use this method to flash isolate the problem is primarily the symptoms are not of power, fuel economy and power. With the rear lamp (12 volts) of a car andconnect it to the output power. If the light is brighter then the controller is okay. If the flashing or dim the power supply problem. Why this method to prove it? For any components shorted or lost on the LCD board, will affect the performance of power.
From experience, most of the nutritional problems or LCD built into the motherboard or power are due to the failure of electrolyticcapacitors (probably from heat) in the department of primary and secondary education. Most capacitors have high ESR, which causes the power supply for the production of low-power, flash or no power. Electrolytic Capacitors Typical values at the primary side 47 and 100 micro farad 50 volts and the secondary walls 1000 to 2200 micro farad 25 volts. Sometimes you see the tape condenser is the shell that hump and fall capacitor body color darkas brownish.
The power section in some of the LCD is still using the UC3842 pulse width modulation (PWM) IC. This type of chip is very easy to find on the market to get some power in relation to the chip that is very difficult. Samsung 153V LCD monitor using the TOP247F POWER IC, which is quite easy to solve problems if the flow is in this model. Some power supply that was only slightly burnt, and after cleaning and replacing the fuse willwork like new.
Troubleshooting the LCD power is not as difficult as it is known how a diet. If you're not sure how to fix the power, I urge you to read all at my articles to the diet. I will continue to power after more stories on this page, and hope you could drop by more often to check on my site.
My Links : LCD Monitors Store. LOWER Prices in The Same Item
No comments:
Post a Comment