Correct symbol for Logical NOR; need help with substitution

Thread Starter

ICR

Joined Apr 20, 2009
15
OK, as I said before... if the TD62479P did not work in your circuit, neither will the original 5714M, because you either installed the TD62479P incorrectly, or there is another problem that you have not yet discovered.
I may not have mentioned it but the power supply was working Ok with the 3 original 5714Ms in place (I wanted to replace every single component on the board, because this power supply lives in the lamphouse with a 200W bulb and is 25 years old). I'm not sure why the TD62479P does not work, but the manufacture of the power supply indicates 'do not substitute' on the 5714m.
 
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