Doepfer

I suspect that my bbd is damaged, is there a sure way to check if it  
it working properly?

I was having a go at the standard flanger patch from the bbd manual  
(page 12) and after playing around with the variables, it seems to not  
giving a bbd output...

Now repatching it doesn't seem to affect the sound at all...??

Any advise would be great since i cannot fault find too well as i was  
only just figuring out how the module works.

Thanks...