Hi Jeff,
Can't tell you how much I appreciate your reply! I'm currently at home so I
can't try your suggestions right now, but will as soon as I get back to the
studio where I work.
I had a broken white key and the display said "lo bat". I bought a new key
and a battery, had to disassemble to whole synth to replace the broken key.
Put everything back together and startet it up. The "lo bat" sign was gone
and I got the usual welcome message. But then the display shows me some
weird characters. (see attached file)
I'm gonna check the battery, but since the "lo bat" indication is gone I'm
guessing that it's ok. My fear is that I screwed something up during
the reassembling process. The thing is the I can't do a factory
reset(7-8-9). Neither the numeric keys or the knob parameter group buttons
are working.
I'm hoping that the short circuit will do the trick. Do you think that
resetting the RAM by short circuiting could make the keys work again? Or is
it more likely to be some cable or a connector?
Thank you so much for helping me out!!
Have a nice weekend!
Regards,
Jonas
On Sat, Jul 7, 2012 at 11:14 AM, Jeff <jf.serviere@...> wrote:
> Hi Jonas !
> First, are you sure of your new battery ? Check it with a voltmeter, it
> could be a bad one ("new" old stock...) . With no load the voltage must
> be at least 3,3 V, is it the right model (CR 2450) if i remember well.
> > Which means the keyboard is useless and that I have to trow it away. I
> > hate trowing stuff away that could be fixed...
> Of course, and i don't think it's a fatal issue.
> You've checked all the connectors, cables, ribbons and so on ? Good idea
> but if your synth performed well before the battery replacement i don't
> think it could be a problem, unless you've done something wrong during
> the operation...
> What i would do if it was mine :
>
> ∗ remove the battery, power it up and try to perform the full factory
> reset . It works ? Then the cause is the new battery ... or
> ∗ with the synth open, the power OFF (important, to be completely sure
> remove the power supply) do a momentary short circuit (yes !)
> between both sides + and minus of the battery socket (it has been
> removed, remember !), it will completely reset the static RAM where
> the patches are stored. There is a lot of capacitors inside the
> AN1x, the RAM itself could be considered as a bunch of very small
> capacitors (it's CMos) and it could be in some "undetermined" state,
> neither "empty" nor in backup mode.
> ∗ after these operations, replace once again the battery, reassemble
> the synth and then do a full factory reset , it SHOULD work.
>
> Some people use a "kamikaze way" to change the battery without losing
> their beloved patches when they have no external backup facility . They
> change it "live", with the synth open but powered. It works but you have
> to be very careful to avoid any short circuit between anything and
> anything else !
>
> Don't panic, the AN1x is very reliable and mostly composed of digital
> ICs which are reliable too, much more than their analog counterpart.
> That's one reason why the old Prophets Moogs and others vintage synths
> disappeared....
>
> Cheers.
> J.F.
>
>
>
>
> joohlund a écrit :
> >
> > My name i Jonas and I just replaced the battery in my Yamaha AN1x.
> > When I started it up after the battery replacement I got the ordinary
> > welcome message and then a couple of weird characters. The numeric
> > keys + the Knob Parameter Group is not responding at all. This means I
> > can't do the factory reset. Which means the keyboard is useless and
> > that I have to trow it away. I hate trowing stuff away that could be
> > fixed...
> >
> > I've dissembled the synth completely, checked for loose connectors and
> > cable, even started it up and messed around under the hood while
> > pressing the num keys without any luck...
> >
> > You guys are my last hope! Any ideas are very appreciated!
> > Thanks in advance.
> >
> > Regards,
> > Jonas
> >
> >
>
>
>
>
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