SOLVED Pendulum LFO has no "O". LEDs are just on.

[The Gator]

So this is about the fifth pendulum I've built and this is the first one that I've had any issues. Basically I would say the voltage does not look right to me between R12 and R11 going to pin 12 on ic2.4. I would imagine it's a voltage divider and I should be seeing about 4.5v, instead it's about 6.8v.
Anybody have one they could check voltages on?
I'm going to check a few things then post pics.
Thanks

 

[Nostradoomus]

With the rate and depth cranked mine is around 4.5v but fluctuating a bit, the lower the rate the more it fluctuates but it never hits 6.8v. Let me know if you need more.

 

[The Gator]

Thank you very much. That's what I thought. I sold all the ones I had previously built (like a dummy). I should know better and always keep one so I can stare and compare to see what I've done wrong. I'm just having a hard time figuring out on this one. Everything else is kosher, just doesn't oscillate. I've got some fresh TL074 op-amps coming in, along with fresh sockets. I'm starting to believe there's something wrong with one of those. Perhaps the tlo74s I have are bad? But all of the ones I have? That seems unlikely. Don't normally see bad sockets but it is possible.

 

[Nostradoomus]

mine aren't in sockets

 

[The Gator]

Yeah there's two sides to every coin. A lot of people say the less things you solder the better the less connections there are the better. And that is definitely true to some aspect. However as an electrician who is a service technician, I know that serviceability means a lot. I always socket ICs, and use connectors if I can to make assembly possible, without soldering needed to be done inside the enclosure.
I removed ic2, and it's socket, and powered it back up. The voltage is correct which leads me to believe there was something wrong with the socket I had. Still kind of doesn't make sense though. Probably going to wait at this point until my digit key order shows up.

 

[Nostradoomus]

Worth a shot. I don't socket the basic things that work 99% of the time any more (if you buy legit parts). I have so many old unboxed circuits lying around with sockets, it's easy enough to chuck an IC in and see if it's functioning right before soldering it in. I also don't find desoldering to be much of a pain haha

 

[The Gator]

It's runnin' now. Not sure how socket goes bad but, it works now.