Doepfer

Are you sure that your case contains the old power supply ? The old power
supply is out of procuction since about 10 years. If the new supply
(A-100PSU2) is built into the case an 800 mA fuse is required.

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 13:55
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: My Doepfer is sick :-(
>
>
> 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/
> > > >
> > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> >
>
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