My monitor MAG lcd 16inch turn black i change all the capacitor 6 pcs 470uF 25 volt same problem again help me Thank you

In case you haven't done it already, please connect the monitor to the computer and turn everything on and let it boot up. While the screen is black, take a flashlight and carefully hold it against the screen. If you can see that the LCD portion of the screen is working, then continue reading. This model seems to have a number of complaints against it. That being said, many people seem to believe that caps become swollen just because that's what they do. In my experience, for multiple caps to swell or need replacing, it takes a long duration over-current event or a short duration death event. The most common long duration over-current event in a monitor is burned bulbs and/or burned transformer. The most common short duration death event being a power surge (blackouts, lightning, or connected to the same breaker as an air conditioner or microwave) If you have successfully replaced the caps, then you already show some technical prowess. Search your main board model number for some more info. If you can read the tiny part numbers on the transformer, search for a datasheet to find a way to test it with a meter. Bulbs are a bit harder to do. I've done it, but it is almost impossible to keep even a single speck of dust from entering the insides. If you get to the bulbs, and they are blackened on the ends, you can be fairly certain that they are burned and creating an over-amp condition in the driver circuits. Best of luck to you.