Aion Dimension C Blueshift - doesn't work

[rschultz]

[matopotato]

So you swapped out all of those? But you feel the problem was mainly with the 571's?

[rschultz]

So you swapped out all of those? But you feel the problem was mainly with the 571's?

Swapping the BBD/clock did not fix the problem. It was definitely the 571's. But I bought all 6 not knowing, and all 6 were only $20+shipping from stompboxparts.com, so I kept those and returned the NOS to eBay.

I've scrutinized the datasheets between the original 571 and the cool audio... identical as far as I can tell. Maybe the eBay ones are counterfeit. Not sure.

[matopotato]

I got my kit from Das Musikding in Germany. It seems to be V571s already, so maybe my solution is not the same as in your case.
Will test them a bit more focused though. And get the scope out. I never tried it since I thought it be useless when the chorusing was not present yet...

How do you like it?

Edit: Checked and all 6 you swapped I already have from CoolAudio.
I got my hopes up though since your symptoms matched mine. Bypass ok, effect turned on just result in slightly lower volume,  but no chorus.  The DPDTs and SPDT and the trims have no impact as far as chorus effect goes.

[rschultz]

Off topic, but how in the hell did boss fit this circuit in their original DC-2, it's a much smaller enclosure than the 125B.

[Nitefly182]

Off topic, but how in the hell did boss fit this circuit in their original DC-2, it's a much smaller enclosure than the 125B.

I don't have the calipers on hand at this moment but I believe the Boss PCB is larger than the Aion PCB and Boss pedals typically have resistors and caps on smaller footprints because they stood all their resistors up in pedals like this and they used dipped film caps instead of box caps. Our standard for DIY PCBs nowadays is everything laid down nice and tidy and that's now how many Japanese pedals are built. Boss pedals also have all their controls and often some components on a daughterboard deeper in the enclosure so that takes pressure off the PCB layout.

But also the folks designing PCBs at Boss were and are just extremely good at their jobs. Almost all the Boss stuff through the 90s and into the early 2000s is even on single sided boards with minimal jumpers.