How to clean LCD moniter screen?

How do you repair an AG Neovo E-19A lcd moniter that displays for a second then the screen goes black?

• Answer:

  I don't have an answer but I do have the exact same monitor with the exact same problem. It's not the cable since I tried connecting it analog instead of digital and that didn't work. It's not the video card since I attached a different monitor to the computer and that monitor did work. Does the green power on light stay lit(with the VGA cable hooked up with a signal)? If so, the is a problem with either the inverter board or a bad backlight on the LCD. I have the same problem with an AG neovo 17" monitor - on vga and BNC inputs it only displays for less than a second before going blank. - clearly given our similar experiences, this is some sort of defect in the monitor - an engineer from ag neovo should sign up and enlighten us. The problem is a defective internal power supply board. If you disassemble the monitor and examine the power board you'll find leaking capacitors (usually) or other out-of-spec part. We're just a computer repair shop.