Hi ,
tonight i will take a longer look to the flanger board, as well as
trying some of the tips Johannes gave me (yesterday i was out and
couldn't be around the Trident)...the distortion is heard despite the
used VCOs , and when both VCOs are active messing with VCO 2 Tune pot
gives me a kind of ring modulation with the correct pitch beeing
heard with less volume than the "ring modulation"...
Thanks all for the help on this !!!!
--- In PolySix@yahoogroups.com, "gil_we" <gil_we@...> wrote:
>
> Also, can you see any broken or "cold" solder joint on this board ?
>
>
>
>
>
>
> --- In PolySix@yahoogroups.com, "gil_we" <gil_we@> wrote:
> >
> > The Flanger board (KLM-291) is also the mixer board, in case it
got
> > defective it makes sense to me that the synth problem may be
> related
> > to a defect on that board as well.
> >
> > Do you get that problem only, but only for the synth sound ?
> >
> > Does it sound distorted on both VCOs ? You can eliminte VCO1 and
> only
> > listen to VCO2 and vice versa ?
> >
> >
> >
> > --- In PolySix@yahoogroups.com, "stagerhodes" <stagerhodes@>
wrote:
> > >
> > > thank you !...well, the controls are working, only it makes a
> kind
> > of
> > > distortion which is more audible in the 16' and 8' octaves, it
> > > reduces it in the 4' ( a distortion with some kind of
> modulation ),
> > > the bad effect will be more noticed too if one set the EG
> Intensity
> > > to center or full counterclockwise (negative envelope). I tried
> to
> > > memorize 2 patches and the programmer seems ok, the patches are
> > > there, so i just don't know what to do next...
> > > I must say that it seems the top panel was (may be the unit
> crashed
> > > in the floor or something) bend in the master tune pot area,
> after
> > a
> > > close look i saw one of the screws fixing the Flanger board ,
in
> > its
> > > place with a small PCB fragment attached, and the board broke
in
> > one
> > > of its edges (screw area). I took out the flanger board and it
> > seems
> > > no damage in any of the pcb traces...anyway does any
malfunction
> in
> > > this board reflects in the synth section sound (with flanger
> turned
> > > off) ??
> > > Oh, the preset sounds are not ok, just a short beep (low
> > frequency),
> > > the strings and brass are OK
> > > regards
> > > Art
> > >
> > >
> > > --- In PolySix@yahoogroups.com, Johannes Hausensteiner <johau@>
> > > wrote:
> > > >
> > > > The PCB looks OK; no damage due to leaked battery as in the
> > Polysix
> > > > is visible. According to the pics (silkscreen) the battery
> which
> > is
> > > > mounted seems to be original or genuine replacement. So I
> wuuld
> > not
> > > > suspect a threat like in the P6. It largely depends on the
> > battery
> > > > make, which seems to be good quality in this unit. So as long
> as
> > the
> > > > battery retains sufficient voltage (more than 2.5V) I would
not
> > > > worry about it.
> > > > This does not surprise me, since the Trident MK I programmer
> and
> > the
> > > > MK II programmer are completely different. MK I was designed
> > before
> > > > Polysix, MK II afterwards or the same time obviously useing
the
> > same
> > > > technique in both (edit mode, etc). Amazingly they did not
use a
> > > > microprocessor for the patch manager in the MK I but an all-
> > hardware
> > > > type of design.
> > > >
> > > > Regarding your original problem: it may be (even likely) that
> the
> > > > battery is dead or at least discharged and all memory patches
> are
> > > gone
> > > > producing no or meaningless sound. Are the knobs and switches
> > > working
> > > > in "Manual" mode? How do the presets ("Piano 1", "Piano
> > 2", "Clav")
> > > > sound?
> > > >
> > > > According to the schematics there are on KLM-317 three sets
of
> > pots
> > > > for the presets; you may set your favourite sound patches
there.
> > > > (The Yamaha CS-60 and CS-80 had a similar kind of "Patch
> > Memory"..)
> > > >
> > > > Johannes
> > > >
> > > >
> > > > stagerhodes wrote:
> > > > > Hi,
> > > > > just uploaded 8 photos of the board, hope they're ok now
for
> > you
> > > to
> > > > > try to help me.
> > > > > regards,
> > > > > Art
> > > > >
> > > > >
> > > > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@> wrote:
> > > > >
> > > > >>you're welcome,
> > > > >>
> > > > >>I'm interested to see how corroded is the board - if any at
> all.
> > > > >>
> > > > >>
> > > > >>--- In PolySix@yahoogroups.com, "stagerhodes"
> > <stagerhodes@y...>
> > > wrote:
> > > > >>
> > > > >>>Hi Gil,
> > > > >>>well, i'm not at home right now, but the battery is from
> > Sanyo,
> > > and
> > > > >>>the big lettering is CADNICA (nickel cadmium).
> > > > >>>I will take better pictures tonight and post them
(deleting
> > the
> > > ones
> > > > >>>there now)...well, what can i say besides thank you for
your
> > > > >>>support ...
> > > > >>>
> > > > >>>
> > > > >>>--- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...>
wrote:
> > > > >>>
> > > > >>>>It's very hard to see anything on those pictures... I do
> see
> > > though
> > > > >>>>that the battery was already replaced ?? looks like a
> lithium
> > > battery
> > > > >>>>what does it say on it ?
> > > > >>>>
> > > > >>>>Try to provide close up high resolution pictures of the
> > > programmer
> > > > >>>>
> > > > >>>>
> > > > >>>>--- In PolySix@yahoogroups.com, "stagerhodes"
> > > <stagerhodes@y...> wrote:
> > > > >>>>
> > > > >>>>>I think i have another problem here, not related with
> > battery
> > > leak,
> > > > >>>>>i just uploaded some photos , not very good quality, but
> the
> > > battery
> > > > >>>>>seems to be sealed, and the programmer is working
despite
> > some
> > > press
> > > > >>>>>memory recall buttons need cleaning or replacing. Well ,
> the
> > > synth
> > > > >>>>>sound has some distortion and sounds like ring
modulation,
> > > this is
> > > > >>>>>minimized if the negative/positive VCF EG Intensity is
> full
> > > > >>>>>clockwise. The preset sounds are like no envelope
sustain,
> > > just a
> > > > >>>>>short low (frequency) click...well, i'm not a keyboard
> > > technician,
> > > > >>>>>just trying to make something here, otherwise i will
have
> to
> > > take
> > > > >>>>>the synth and schematics to a friend who is a technician
> > > (works in
> > > > >>>>>musical instruments, not vintage ones but...) and try to
> put
> > > this
> > > > >>>>>synth to play...have to say the brass and strings
sections
> > are
> > > ok,
> > > > >>>>>the split keyboard function switches and behavior are
ok,
> > bend
> > > and
> > > > >>>>>mod ok...well...lets see
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>--- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...>
> > wrote:
> > > > >>>>>
> > > > >>>>>>Thanks,
> > > > >>>>>>
> > > > >>>>>>I believe that this type of info should be shared all
> over
> > > the net.
> > > > >>>>>>The Trident's schematics are very rare - took me weeks
to
> > get
> > > them;
> > > > >>>>>>however, here they are.
> > > > >>>>>>
> > > > >>>>>>I got my Trident in disasterous condition, nothing
> worked,
> > > battery
> > > > >>>>>>corrosion, bad chips, everything you may think of...
Got
> it
> > > work
> > > > >>>>>>finally after doing the refurbishment step by step.
This
> is
> > > an
> > > > >>>>>>incredible machine, one of the best ever made and
> > definately
> > > Korg's
> > > > >>>>>>best Polysynth.
> > > > >>>>>>
> > > > >>>>>>Let us know how you proceed, also if you can take some
> > > pictues of the
> > > > >>>>>>board it would help.
> > > > >>>>>>
> > > > >>>>>>
> > > > >>>>>>--- In PolySix@yahoogroups.com, "stagerhodes"
> > > <stagerhodes@y...> wrote:
> > > > >>>>>>
> > > > >>>>>>> Oh, i'm very pleased regarding this group , many
thanks
> > for
> > > your
> > > > >>>>>>> reply and the schematics beeing available for
> download...
> > i
> > > will
> > > > >>>>>>> unmount the Trident may be tonight or tomorrow night
> and
> > > will post my
> > > > >>>>>>> sights inside. This is one of my favorite (regarding
> it's
> > > wood design
> > > > >>>>>>> and the sound, particularly the synth section)
> keyboards
> > > from korg ,
> > > > >>>>>>> and i can say i tried almost them all at the time
they
> > were
> > > beeing
> > > > >>>>>>> produced since i was working demoing them in a shop.
So
> > now
> > > is the
> > > > >>>>>>> time for me to have some of them in full working
> > > condiction...
> > > > >>>>>>> Art
> > > > >>>>>>>
> > > > >>>>>>>
> > > > >>>>>>> --- In PolySix@yahoogroups.com, "gil_we"
<gil_we@y...>
> > > wrote:
> > > > >>>>>>>
> > > > >>>>>>>> I didn't fully understand how the synth section acts
> on
> > > this machine...
> > > > >>>>>>>> Also, is there corrosion (green colored) on the
> battery
> > > and near it ?
> > > > >>>>>>>> Are there bad (black colored)traces ? are the signal
> and
> > > synth boards
> > > > >>>>>>>> correded as well on some areas ?
> > > > >>>>>>>>
> > > > >>>>>>>> Take extra care not to hurt anyting that works.
> > > Particually, stay
> > > > >>>>>>>> away from the 10 leg transistor type component at
the
> > > bottom left
> > > > >>>>>>>> side of right bottom (signal) board. This one is
> > extremely
> > > sensitive
> > > > >>>>>>>> to extreme temperature changes and is very rare and
> > > expensive to get.
> > > > >>>>>>>>
> > > > >>>>>>>> You can use the schematics I uploaded to the Files
> > section.
> > > > >>>>>>>>
> > > > >>>>>>>>
> > > > >>>>>>>> --- In PolySix@yahoogroups.com, "stagerhodes"
> > > <stagerhodes@y...> wrote:
> > > > >>>>>>>>
> > > > >>>>>>>>> Hi,
> > > > >>>>>>>>> i just bought a Trident MK I in which the poly
synth
> > > section is
> > > > >>>>>>>>> malfunctioning, i am almost certain that the
problem
> is
> > > the battery
> > > > >>>>>>>>> question , and the leakage from it. It seems the
tune
> > is
> > > ok, all notes
> > > > >>>>>>>>> are sounding (brass and strings sections), in the
> synth
> > > section one can
> > > > >>>>>>>>> ear some sound (it is possible to ear the notes
> pitch,
> > > but with some
> > > > >>>>>>>>> strange effects in them) and the memory section is
> not
> > > working which
> > > > >>>>>>>>> leads me to the battery question. Is there any
> special
> > > care i must have
> > > > >>>>>>>>> in this model ?
> > > > >>>>>>>>> regards
> > > > >>>>>>>>> Art
> > > > >>>>>>>>> Portugal
> > > > >>>>>>>>>
> > > > >>>>>>>>>
> > > > >>>>>>>>
> > > > >>>>>>>
> > > > >>>>>>
> > > > >>>>>
> > > > >>>>
> > > > >>>
> > > > >>
> > > > >
> > > > >
> > > > > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> > > > > Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
>