Sooo...I need to jumper pin 7 to the right resistor and sort out power to pin 6. Can the power for pin 6 be jumpered off pin 6 on U17?
Provided the pin 6 is meant to be permanently tied to +5V it can be jumpered from anywhere that has +5V permanently including pin 4 or 8 of the same device (assuming these too are permanently tied to +5v).
I've jumpered it from pin 4 to 6, which ties the 5v to it. Both U16 & U17 now buzz out identical and getting correct voltages to those pins.
Still no 12v on pin 3.
