I have no signal on my lcd monitor what can...

monitor screen crcked picture still good can this be fixed easily\

If you see a dim image on the LCD screen when you view it at a sharp angle, then the monitor has a backlight fault. The fault could be the inverter board which supplier high voltage to the CCFL lamp or the CCFL lamp could be faulty. The CCFL lamp is a mini fluro tube and can fail when it ages.
Check out LCD Parts for service, parts, and DIY info - click on this link to their WEB site : -
www.lcdparts.net

Firstly check all the cables are correctly inserted and they are in tight. Secondly restart the device that the monitor is connected to and also ensure that it is set to display on an external monitor. e.g. in laptops there is an fn key combination that you need to complete on the keyboard in order to display on an external monitor