no text on LCD


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  1. #1
    Join Date
    Jun 2007
    Posts
    19

    Default no text on LCD

    i have a 4x20 line lcd display with a program to say hello world.

    when the program is run it just shows up as a small block in the top left corner

    when the capacitors each side of the crystal are removed (2 x 33nf) it shows up as 2 lines of blocks

    can some one tell me why it is doing this and not displaying my text?
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