Cave Dweller only noise repeats

[Liustucru]

Pin 12 should have the delayed signal.  14 and 15 seem ok

Since I only hear noise repeats on the output, this is consistent with what I hear from pin 12 too.

Check the continuity between ground and Pin 3 and also ground and pin 4.

It's almost like the PT2399's are locking up

Continuity is OK with both pin 3 & 4.