Investigating LCD monitor power supply pack is simpler than the crt monitor power supply. It is little and conservative and typically has just a single result which is 12 volt and reach from 2 ampere to north of 4 ampere. Some planned have 18 and 24 volts too. These days most LCD power supplies are incorporate into the fundamental board, for example, the Dell E151FP LCD Monitor while the more seasoned type were isolated as power pack module.

The power pack module type is easy to analyze on the grounds that you can supplant another functioning unit just to ensure is the power pack that giving issue. You may likewise utilize an outside dc power supply to control up the LCD to affirm in the event that the power pack is flawed. On the off chance that you don't have the outside dc power supply, you can always utilize this technique to segregate the issue particularly the symptoms are no power, low endlessly power flicker. Utilizing the back light (12 volt) from a vehicle and interface it to the power pack yield jack. On the off chance that it light splendidly, the power pack is OK. Assuming it flicker or faint the power pack have issue. Why need to utilize this strategy to test it? Since, assuming there are parts shorted or broken at the LCD primary board, it will influence the power supply execution. Click here TFT LCD Board

From experienced, the majority of the LCD power supply problems whether in the power pack or incorporated into fundamental board were because of the disappointment of electrolytic capacitors (generally most likely because of intensity) in the essential and auxiliary segment. The majority of the capacitors have a high ESR which causes the power supply to create low result, flicker or no power by any means. Ordinary worth electrolytic capacitors in the essential side are 47 and 100 miniature farad 50 Volt and the optional sides are 1000 to 2200 miniature farad 25 volt. Once in a while you can see the capacitor top packaging became swell and the sleeve that covered the capacitor packaging transformed into more obscure variety like earthy.

The power segment in a portion of the LCD screen are as yet utilizing the UC3842 beat width regulation (pwm) ic. This kind of ic is quite easy to find in the market contrast with some power ic which is extremely challenging to get. Samsung 153V LCD monitor is utilizing the TOP247F power ic which is quite easy to investigate on the off chance that power bomb in this model. Some power pack that came in just have minor consumed and in the wake of cleaning it and supplanted the circuit, it will fill in comparable to the enhanced one.