I am building a K1. On page 37, Alignment and test, Part 1, when I turn on power I do not get the e27 display. The LED test was correct. The LCD only shows a few vertical bars on the top half of the display. If I tap a switch, the display goes blank. All resistance and voltage checks up to this point are OK. I have gone back over the construction steps and check soldering etc. Can't find anything wrong. Any suggestions?

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