The display lights up but there's nothing on the screen
If you display lights up but you can't see anything on the screen, check these solutions.
When this problem occurs, it can often be that the board just needs a quick reboot.
Disconnect the NEGATIVE (-) terminal from the battery and reconnec...
Sun, 25 Jan, 2015 at 9:40 PM
If the display lights up but its blank and there are no digits, there could be loose connections on the back of the board.
See "How to reseat t...
Sun, 25 Jan, 2015 at 8:32 PM