Hi. My name is*****'m a camera repair technician with over 20 years in the business and I'll be glad to help you with your question today.
I'm afraid it's bad news. If the LCD won't come on at all, the camera is going to need professional attention. It's an electronic problem and require trouble shooting to find and fix the problem. Below is a link to a directory of repair shops, one of which should be in your area and able to help you.