[sdiy] Re: [AH] Juno 106 stuck notes....

[cheater cheater]

See if this happens when you route midi from your a33 to your pc, and
then with MIDI-OX to the juno 106.
It might be that the signal isn't 'strong' enough, e.g. too long rise
times. (same reason as why you can only chain so many midi devices
with midi thru)

The optocoupler in the 106 might have aged. Replacing it might help,
but it would be wise to do some additional tests with an oscilloscope
before butchering an old synth.

D.

On Sat, Sep 26, 2009 at 11:20 PM, Gil W. <gil_we at yahoo.com> wrote:
> This is strange.
>
> I had the 106 powered ON for a couple of days - no issues.
> I connected the MIDI OUT of my sound card to the 106 MIDI IN,
> played notes and changed presets via MIDI - it works perfectly,
> no notes hanging, or changing spontaneously...
>
> Could it be that the A33 sends junk data to the 106 at some point during the shows ? I couldn't find any consistency when this happens (i.e it can happen just about with any preset)...?
>
> Can the A33 sends "all notes off" for each preset, when switching to it  ?
>
>
>
> --- On Tue, 9/22/09, Florian Anwander <fanwander at mnet-online.de> wrote:
>
>> From: Florian Anwander <fanwander at mnet-online.de>
>> Subject: Re: [AH] Juno 106 stuck notes....
>> To: "Gil W." <gil_we at yahoo.com>
>> Cc: "Analog Heaven" <analogue at hyperreal.org>
>> Date: Tuesday, September 22, 2009, 5:46 PM
>> Gil W. schrieb:
>> > My Juno 106 is giving me some issues lately. I already
>> replaced all 80017A's with clones and generally it works
>> very well and quite reliable except for one problem which
>> I'll describe -
>> >
>> > The 106 is getting MIDI IN from my Roland A33
>> controller, sent to it via MIDI OUT #2 (OUT #1 is going into
>> my JV2080). This way I can send notes and preset changes to
>> the JV2080, and preset changes to the 106. So the 106
>> doesn't receive motes on/off, once I switch a preset on the
>> A33, I click the MIDI OUTPUT SELECT #2 to OFF, so it doesn't
>> send MIDI to the 106 anymore.
>> >
>> > I don't know if the problem has anything to do with
>> the specific set-up, or MIDI in general, but after playing
>> about 15 songs (or an hour), when I switch to a preset and
>> play, I would hear the notes continuously, meaning they get
>> stuck. It will sometimes get back to normal operation when I
>> would switch the presets manually on the 106....
>> >
>> > This really giving me bad times on live shows so I
>> must get it fixed somehow....
>> >
>> > Any idea what could cause this and how can this be
>> sorted out ?
>>
>> The MIDI-handling of the early Roland polyphonic synths was
>> not the best. I had note hangs with Juno60, JX3P, Juno106
>> and even JP6 (while the JP6 was slightly better, because of
>> the relocation of the soundcontrol actions to a second
>> processor, so one CPU had to handle only keyboard and
>> MIDI).
>> They are espicially sesitive to extremely short notes,
>> which happens in live playing often without intention.
>>
>> The JX3P sends a dedicated "all notes off" controller event
>> (CC=123 Value=0 or something like that) to catch hanging
>> notes. If I program the JX3P in the matrix editor of Logic
>> and forget this event, it shows hanging notes on a regular
>> basis.
>>
>> Now why does it come that late. I assume, that it happens
>> earlier, but you do not realize due to more percussive
>> sounds. Maybe you also simply have a song, which provides
>> many MIDI or extremely short events, in that part of your
>> set.
>> If the A33 is able to send "all notes off", this would be a
>> help.
>>
>>
>> Florian
>>
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