N 70 blank display solution plz - Nikon D70s Digital Camera

Not a lot to go on.

If the display shows up when you hold the shutter release down halfway, then the internal battery has drained. This battery-different from the EN-EL3 that serves as the main battery-runs the clock and keeps your settings while the main battery is removed. You may be able to recharge it by putting a fully-charged main battery into the camera and leaving it alone for three days. (This is in your manual.) After three days have passed, turn the camera on. Both displays should work like normal, and it should prompt you to set the clock.