I have this same board, and I believe I may have the same issue. The photos the OP posted are no longer linkable, but what I'm getting when I run the sample code is, the top row lights up a full matrix of pixels, and the bottom row shows nothing. The contrast pot works fine, I can brighten or dim the blocks, but cannot make any actual characters appear. I notice that the code is written to change colors, which of course can't be done on this Blue/White version. Is there different code designed for the product referenced at http://adafruit.com/products/1115
, or should the color LCD code work for this product as well? Is there anything else I can check?
*edit* I did the multimeter test on the first three pins, and received the same result. 5v across 1&2, variable 0-5v across 1 and 3, depending on position of the contrast pot.