Hi,
It appears as though the screen’s backlight is on but as you say there are no images.
Can you still take pictures OK?
I realize that you cannot see what you’re taking in the screen but try taking some pictures and downloading them to a computer.
If you get good pictures then the camera’s cmos sensor and motherboard are OK and it may be a loose LCD screen flex cable connection or a faulty screen.
If you can’t take any pictures or if you can but you only have black images then there may be a problem with the cmos sensor or the motherboard or both.
Here’s a link to the ifixit [[Topic:Canon EOS 60D]] guides that will help you to check the screen cable connection or to replace the screen if that is the problem.
Replacement LCD screens are available online. Just search for ''Canon EOS 60D LCD screen'' to get results for suppliers that suit you best.