What's the best way to clean an LCD monitor?

Is there any way to fix this malfunctioning LCD monitor that won't light up properly (detailed answer needed)?

• I have an LCD desktop monitor that is about 8 years old. It is an Atec Neoview AL181. The monitor was working fine up until last year. The problem with it now is that the screen is completely black whenever it's connected to a computer. I already checked to make sure that the cables are ok and they are fine (because I hooked up another monitor using the same cables and it worked just fine). I know that the monitor is not fully gone, because the power light still works. What could possibly be wrong with it? Is there any way for me to fix it? I already opened up the monitor and saw that there is one transistor that is bulged out at the top a bit. Could that be the problem? Or is it sometime else?

• Answer:

  See Already you done few basic troubleshooting steps n you getting power light on your monitor too.So it wil be a internal problem where you need to check with the stores they wil check its a problem with the transistor are its a problem with some other device because we cant check your monitor here to know whats the exact internal problem.So check with a store technician and check what wil be the problem and fix it then your monitor wil be up and running.