Doepfer

Thats no problem, I appreciate your assistance regardless.

Do you know if it is possible for any specific waveforms or even  
possibly a mixed exponential output / input as controlled voltage to  
bbd (cv1/cv2) to perhaps cause damage to the chip(3005?)

I suspect this may have caused it if that can be the case, as i recall  
using an exponential mixer output quote allot on that suspect patches  
that day...maybe.
Anyway, I will email Dieter and await a response upon his return. :)

Thanks again

Regards

Michael


On 18/08/2008, at 4:06 AM, selfoscillate wrote:

>
> 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...
> > > >
> > >
> > >
> > >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
> 



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