OK. I bit the bullet and swapped ICs between the two boards. It turns out that the fault follows a 74LS175 IC. The turned pin sockets on both boards were hanging onto the ICs for dear life. Are they military sockets perchance?
Anyway, problem solved.
Alan
Anyway, problem solved.
Alan
Statistics: Posted by roganjosh — Sun Jun 30, 2024 9:30 am