HI Check for a short between pin 11 of the 'hc374 and +5V. Pin 11 is supposed to be connected to pin 9 of the 'hc138. It is the select line for the 8 flip-flops in the 374. If you have a logic probe, check either of these pins. They should be (...) (28 years ago, 15-Jul-96, to lugnet.robotics.handyboard)
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