I have a bbd module ( 4096 stages) I tried putting it in a mini
case(beauty case) witha wave multiplier as they fit perfectly
together in there but it doesn't seem to work correctly.

Basically the clock is not working and it seems to be stuck at a
really long delay, and can only get noise out of it instead of the
usual thick delay (but can still mix with initial signal)

I put it back on my rack and it went to working perfectly.

is there a reason/limitation for this module that won't allow it to
work well in the mini case

or is it simply that when those two modules are together they suck way
too much current for the mini case supply

C.