berniecallis 0 Newbie Poster

Hi All,
I am new and possibly have not searched enough. I cannot find any discussion/troubleshooting/ideas/etc. concerning laptops. This is my own little area of interest and have been fairly successful in the power connector/motherboard area but other areas I need help. If anyone can point me to a forum group or sub group, please do!
I have one problem now on a customer's Dell 6000, It will run fine connected to an external monitor but nothing on the screen of the laptop. First thought of course, is replace LCD, but I made that mistake on one of my own a few years ago. Anyone with any suggestions for me on this?

Thanx and Have Great Dayss!!