SOLVED Need a second set of eyes (Duo-Phase)

[DGWVI]

Hopefully the pics are clear enough

Having an issue with the power delivery on the B side of this latest Duo-Phase- the LFO will not start, but the phase stages work otherwise.


I've gone over everything several times, and have replaced everything in the LFO section and power sections for Side B and kinda stuck on what to do next. The Depth and Trimpots all effect the LEDs as they're expected to, but I get no movement from the LFO

Removed the Feedback pot to make photos easier.



Voltages for the borked side... As you can see I'm getting static negative voltages on both ICs 5B and 6B, even after resoldering, cleaning, replacing (everything, including the switches but, except the sockets), and cleaning again

I also get continuity between IC6B and all three pins of the LFO switchz regardless of which position it's in.


Voltages for the working side


I've gone over everything with a flashlight and magnifier, and see no solder bridges or damaged traces.
Side A works perfectly

 

[jhaneyzz]

 

[Harry Klippton]

Kimchi is an essential component to box Mac n cheese. If it doesn't have kimchi, I don't even want it

 

[Betty Wont]

I love cabbage. Kimchi and curtido are freaking awesome. And I dig anything pickled. But sauerkraut doesn’t work for me.

 

[Harry Klippton]

I love cabbage. Kimchi and curtido are freaking awesome. And I dig anything pickled. But sauerkraut doesn’t work for me.

Not even on hot dogs?

 

[Betty Wont]

Not even on hot dogs?

Hot dogs and sausage don’t do it for me either. I love burgers. Have a cheeseburger tattoo.

 

[music6000]

Hopefully the pics are clear enough

Having an issue with the power delivery on the B side of this latest Duo-Phase- the LFO will not start, but the phase stages work otherwise.


I've gone over everything several times, and have replaced everything in the LFO section and power sections for Side B and kinda stuck on what to do next. The Depth and Trimpots all effect the LEDs as they're expected to, but I get no movement from the LFO

Removed the Feedback pot to make photos easier.
View attachment 44867View attachment 44868View attachment 44869View attachment 44870


Voltages for the borked side... As you can see I'm getting static negative voltages on both ICs 5B and 6B, even after resoldering, cleaning, replacing (everything, including the switches but, except the sockets), and cleaning again

I also get continuity between IC6B and all three pins of the LFO switchz regardless of which position it's in.
View attachment 44871

Voltages for the working side
View attachment 44872

I've gone over everything with a flashlight and magnifier, and see no solder bridges or damaged traces.
Side A works perfectly

So much Yellow & Cream!
I summize you are using Tantalum where the Electro's are, Check for rotation ie C14B, C15B.
Did you have the power diconnected when checking for Continuity anywhere & at the Switch?

 

[DGWVI]

Kimchi is an essential component to box Mac n cheese. If it doesn't have kimchi, I don't even want it

I will need to try this, but it sounds glorious

 

[DGWVI]

So much Yellow & Cream!
I summize you are using Tantalum where the Electro's are, Check for rotation ie C14B, C15B.
Did you have the power diconnected when checking for Continuity anywhere & at the Switch?

I've checked orientation of all polarized components more than I'm comfortable admitting...
Power was applied when checking continuity.
I'm gonna deep dive it a bit more when I get home, and try to map out where the power's going fucky

 

[DGWVI]

Hot dogs and sausage don’t do it for me either. I love burgers. Have a cheeseburger tattoo.

I'm mostly a pescatarian, but there's a local burger place that is hard to say no to

 

[music6000]

I've checked orientation of all polarized components more than I'm comfortable admitting...
Power was applied when checking continuity.
I'm gonna deep dive it a bit more when I get home, and try to map out where the power's going fucky

You should not have power connected when checking for continuity!

 

[Betty Wont]

I'm mostly a pescatarian, but there's a local burger place that is hard to say no to

I’m mostly veggie, but grilled beef is just devine. I prefer worldly veggie dishes (from Morocco to Greece to India, and such) but when the Satay, Carne Asada, and patties of chuck hit the grates

 

[Mentaltossflycoon]

Very good. I mean this in the most respectful way, truly, and I love to be a contrarian… but I disagree with every single component type choice on this entire build. It’s like the Rueben sandwich. They put every food I can’t stand (down to the bread) together in one place. I can’t comprehend this madness …please be my friend.

And this is why we love @Betty Wont . I'm also with you on the kraut. It's the only fermented veg I haven't come around on.

@Harry Klippton I'll take a kraft dinner with kimchi. Hold the mac.

 

[Harry Klippton]

Y'all weird

 

[jimilee]

I’m mostly veggie, but grilled beef is just devine. I prefer worldly veggie dishes (from Morocco to Greece to India, and such) but when the Satay, Carne Asada, and patties of chuck hit the grates

I’m all pescatarian, there are a lot of vegan foods that are great now. A beyond burger is incredible.

 

[DGWVI]

I’m mostly veggie, but grilled beef is just devine. I prefer worldly veggie dishes (from Morocco to Greece to India, and such) but when the Satay, Carne Asada, and patties of chuck hit the grates

That's basically me, but I eat a ton of Indian dishes...
I do get weak for some carnitas from a particular truck in town, though

 

[Betty Wont]

That's basically me, but I eat a ton of Indian dishes...

I could live off of cucumber raita and those carrot cauliflower ginger mustard oil pickles.

 

[steviejr92]

Dude I had some killer chicken and beef skewers from this Greek place around my way. Man oh man I love Mediterranean and Indian dishes!

 

[DGWVI]

I could live off of cucumber raita and those carrot cauliflower ginger mustard oil pickles.

The last few times I've made raita, I used mango and pineapple in lieu of the cucumber. The mango was alright, but the pineapple was damned good, and went well with the spicier meals

Dude I had some killer chicken and beef skewers from this Greek place around my way. Man oh man I love Mediterranean and Indian dishes!

I miss Greek food. There was an awesome truck with the best falafel for a while, but they just vanished one day

 

[benny_profane]

Did you verify that the cabbage was properly brined? Getting the salt balance off can certainly stall the fermentation.

 

[Betty Wont]

I miss Greek food. There was an awesome truck with the best falafel for a while, but they just vanished one day

I eat falafel and Greek salad at least twice a week at a place near (a mile walk) my work. I love to make chicken sharwarma with yogurt sauce when I can grill outside. Still have 6 foot snowbanks.