Doepfer

sadly i don't own the service manual for the a188/1 yet,
so i cannot give you an advice how to do specific tests.
to be honest, i think you have to send the module in for
repair, as i have no idea what could be the problem.

dieter is on holidays right now, so we cannot ask him
until end of next week, maybe he as a better idea than me.

sorry and best wishes

ingo



--- In Doepfer_a100@yahoogroups.com, "Chidra_100@..." <ChidrA_100@...>
wrote:
>
> Ok chips are secure in their sockets. (3005)
> 
> Feeding any signal into the audio in has mic output.
> 
> Although, mix to bbd out 100% and the bbd switch at middle, has signal  
> out, polarity - or + at full ddb mix has no output.
> 
> Note CV2 in is triangle  output of A-145
> 
> Delay clock makes no sound or jitter. from any polarity settings on  
> bbd, mix or either.
> 
> It was working 5 min before i sent the email yesterday, it seems as  
> though something has failed internally, maybe ic ?
> 
> I only has the A-145 input on cv, it just stopped...
> 
> If there is any specific way to test the ic chips and board, let me  
> know and i will have a go.
> Replacements??
> 
> :(
> 
> Regards
> 
> Michael
> 
> 
> 
> 
> 
> On 16/08/2008, at 8:19 PM, selfoscillate wrote:
> 
> >
> > hello,
> >
> > it is difficult to say what is wrong with your module.
> > please do some checks on your module, maybe we can
> > figure it out.
> >
> > do you hear the input signal at the mix output?
> >
> > when turning the clock all the way down in frequency,
> > do you hear the clock noise at the bbd output?
> >
> > when turning the feedback to maximum, can you hear
> > any self oscillation at the bbd output?
> >
> > can you hear any bbd signal at the mix output?
> >
> > is the bbd chip (mn3005 or mn3205)
> > sitting nicely in his socket?
> >
> > best wishes and good luck :-)
> >
> > ingo
> >
> > --- In Doepfer_a100@yahoogroups.com, "Chidra_100@" <ChidrA_100@>
> > wrote:
> > >
> > >
> > > 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...
> > >
> >
> >
> > 
> 
> 
> 
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>