Doepfer

I have an idea to install another type of module in its place (once I get more fuses), to see if it boots up.  If it does, the modules are the problem.  If not, then there's a problem with the power rail.  I assure you that the total amperage is below 650Ma.  And the fuses are 250 MA, 250V slo-blo 5x20mm.

--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
>
> That's really very strange and I have no simple explanation for this
> behaviour.
> 
> Please double check if you use the correct fuse (maybe with the last modules
> the total current goes beyond the fuse value). Especially pay attention that
> a time lag fuse (slow blow) with the correct value has to be used.
> 
> If the fuse value and type are correct: remove some of the other modules and
> install one the A-140 to see if indeed the A-140 causes the problem. As you
> already mentioned it woul be very odd if both A-140 are faulty (but who
> knows ....)
> 
> Best wishes
> Dieter Doepfer
> 
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Doepfer_a100@yahoogroups.com
> > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von David
> > Gesendet: Freitag, 1. Juni 2012 07:24
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: [Doepfer_a100] Re: My Doepfer is sick :-(
> >
> >
> > OK...I tested every module on its own, and they all tested OK
> > (didn't blow the fuse), and I began to mount them one at a time
> > back into the case.  Everything booted properly, until the very
> > last one, the A-140, which when I booted after plugging this in,
> > caused another fuse to blow.  So the A-140 is the culprit.
> >
> > This is odd, because I have a second A-140, which does the same
> > thing.  Could it be the position in the chain or along the power rail?
> >
> > --- In Doepfer_a100@yahoogroups.com, Florian Anwander
> > <fanwander@> wrote:
> > >
> > > Hello,
> > >
> > > Dieter wrote the essential things of course. I recommend additionally:
> > >
> > > * switch the system off
> > > * unmount the A-130 and A-140 (also unplug the cables for those two
> > > modules at the busboard !!! Dieter forgot to mention that).
> > > * replace the fuse and switch the system on again.
> > >
> > > If the fuse still blows, assumingly something worse happened and I
> > > recommend not to act on further, but send it to big city music and ask
> > > them to fix it.
> > >
> > >
> > > If the fuse does not blow again
> > > * switch off the system
> > > * unmount the next module from the frame, but DO NOT unplug its cable.
> > > * inspect in detail how the cable is plugged in on this module and how
> > > its cable is connected on the busboard. Obey the orientation of the
> > > cable on the module and on the busboard. There is a coloured
> > wire at one
> > > side of the cable.
> > > * now connect the A130 the same way. First attach the cable to the
> > > module, then connect it to the busboard. Obey the orientiation of the
> > > coloured wire (the connector may be "look" to a different side.
> > The only
> > > important thing is the orientation of the coloured wire !!!)
> > > * mount those both module back to the frame (A140 is still unmounted!)
> > > * switch on the system
> > > * The A130 should work now with turned up gain.
> > > * switch off the system
> > > * now connect the A140 the same way. Again obey the orientation of the
> > > coloured wire!
> > > * mount the A140 into the frame
> > > * switch on the system
> > > * test it.
> > > If the fuse blows now again, then the A140 is assumingly broken (or you
> > > misplaced a connector again).
> > >
> > >
> > > Florian
> > >
> > > --
> > > http://fa.utfs.org/
> > >
> >
> >
> >
> >
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