Odd power voltages on IC12 in BD section?

I'm measuring -14.96 V on pin 4 of all IC points in BD section, and +14.77 on all IC points on pin 8, so I think I'm good there.

However on IC12 i'm getting..

Pin 1 - +1.326V
Pin 2 - +2.51V
Pin 3 - 0V
Pin 4 - -14.96V
Pin 5 - +0.52V
Pin 6 +1.314V
Pin 7 - +1.302V
Pin 8 - +14.79V

Is this normal behavior?

Also I noticed that one of my b104 pots is measuring 89.1K. Others are measuring 95-96K.

Is the 89K pot ok? Or should I seek a replacement since it's not actually 100K?

None of those pots will be 100% perfect.

hofmann25 wrote:None of those pots will be 100% perfect.

Righto. I wasn't sure if a pot that was off by 10% of its intended value was a no-no. This should function just as well as a true 100K?

Still concerned about the voltages on IC12 though..

Are any voltages on any pins other than power voltage pins a concern as asked in my first post?

I have now finished the Ride/crash section and am measuring correct power voltages, but on some pins, like the second pin down from top right on IC61, I'm getting a fluctuating voltage from +2.29 to +2.3V.

I'm very new to all of this and I don't know if this is unusual and a bad indication.

Would appreciate any help/input.

backdoorranky wrote:I'm measuring -14.96 V on pin 4 of all IC points in BD section, and +14.77 on all IC points on pin 8, so I think I'm good there.

However on IC12 i'm getting..

Pin 1 - +1.326V
Pin 2 - +2.51V
Pin 3 - 0V
Pin 4 - -14.96V
Pin 5 - +0.52V
Pin 6 +1.314V
Pin 7 - +1.302V
Pin 8 - +14.79V

Is this normal behavior?

This post looks to be a bit old but I'm also measuring similar voltages on my IC12. Does anyone know if this is expected?

IC12 Voltages
Pin 1 = +1.338V
Pin 2 = +2.547V
Pin3 = 0V
Pin4 = -15.19V
Pin5 = +0.523V
Pin6 = +1.326V
Pin7 = +1.315V
Pin8 = +15.08V

Probably