Hello Simon, we're entering territory where we risk to get lost in the
Doepferian outback... I could be *wrong* however I'd choose the
correct fuse for the device in question: the PSU2. Since you will not
fuse the mains supply and the transformer likely got his own fuse this
makes sense to me. Regards, Ingo


--- In Doepfer_a100@yahoogroups.com , "beakanddune" <beakanddune@...>
wrote:

>
> Thanks for your help Ingo. I hadn't noticed this info on the FAQ page.
> From this info it seems I should be using a slow blow fuse in the
> range 630-800mA. But is this correct.....
>
> ....while I was searching for 800mA fuses (anything other than 500mA
> or 1A is very hard to find in Australia), I noticed that that fuses
> are rated for voltage. As I'm in Australia the fuses I'm finding are
> rated at 240VAC. Given that I'm using a step down transformer for my
> 110v PSU2, should I be using an 800mA fuse thats rated at 110VAC
> Could the fact that i'm using 500mA 240VAC fuses in a 110V PSU2 be
> causing me my problem Sorry for my ignorance on all this :-(
>
>
> --- In Doepfer_a100@yahoogroups.com , "ilanode" <techmeier@> wrote:
> >
> > Hello Simon, even though you might have damaged one or more modules I
> > don't think this is the reason for the constantly blowing fuses.
> >
> > Assumed by now all modules are connected correctly I suggest to try
> > other fuses: "630 - 700 mA time lag (slow blow)". [That info is from
> > Dopefer's HP -> FAQ.] Make sure they are SLOW BLOW/TIME LAG!
> >
> > Hope that helps, Ingo
> >
> > --- In Doepfer_a100@yahoogroups.com , "beakanddune" <beakanddune@>
> > wrote:
> > >
> > > Hi People,
> > >
> > > I know that the topic of fuses has appeared a few times and others
> > > have experienced similar problems but I'm not sure what to do about
> > > this. Sorry about the long winded nature of the post but I don't

want

> > > to leave out any prudent info (including details of my own

stupidity).

> > >
> > > I have an A-100P with a 110v PSU2. I'm in Australia so I'm using a
> > > stepdown transformer that has a 250 VA rating. The A-100P is

half full

> > > and has been operating for the last month or so without a problem. I
> > > recently added an A-118 (Noise) and an A-131 (VCA) and had no
> problems.
> > >
> > > The other day I removed a few modules in order to fit the spring

from

> > > my A-199 and when putting the modules back in I accidentally

plugged

> > > my A-112 in incorrectly (I plugged the cable into the bus board
> > > without plugging it into the left hand row of pins). When I powered
> > > the unit on the lights came on momentarily and then no power. I then
> > > realied my error and corrected it but it seems that the fuse in my
> > > case had also blown. I replaced this with a 500mA time lag fuse and
> > > this worked fine.
> > >
> > > Since then when I power the case on the fuse blows 80% of the

time and

> > > I've just run out of 500mA fuses. :-( Note that 1A fuses seem to
> > > work fine but I'm aware that these are not recommended.
> > >
> > > I'm not sure whether this problem is being caused by :
> > >
> > > a. A now 'damaged' A-112 (still seems to work ok).
> > > b. A damaged PSU2.
> > > c. Unsuitable fuses.
> > > d. Some other factor.
> > >
> > > Could anyone tell me whether I've likely broken anything and if

there

> > > is anything that could be causing the fuses to blow
> > >
> > > Thanks in advance
> > >
> > > Simon
> > >
> >
>