EsotericLabs Posted November 2, 2012 Report Share Posted November 2, 2012 (edited) Hello Midiboxers, My standard 2x16 LCD shows only squares on the upper line. It has worked before properly, I doublechecked the cable. I measured voltages on the J15A pins, Vss = 0V; Vdd= 5V; VO depends on the setting of the contrast pot, the same on the properly labeled soldering islands on the display itself. Solved: the IC2 74HC595 was toasted. New one in and LCD working. Edited November 3, 2012 by Martijn Quote Link to comment Share on other sites More sharing options...
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