Johannes - could it be somewhere in the mixer (some bad opamp where
the synth section comes in) ?
--- In PolySix@yahoogroups.com, "stagerhodes" <stagerhodes@...> wrote:
>
> Hi Johannes,
>
> i will try your tips and see what happens...only one thing , the
> distortion is more proeminent with EG Intensity to full positive
> position (all turned right) not negative as you understood...
> thanks !!!
>
> --- In PolySix@yahoogroups.com, Johannes Hausensteiner <johau@>
> wrote:
> >
> > Hi Art,
> >
> > No,the flanger does not have any influence on the synth section,
> > technically.
> > So, what I get from your post is that there are (possibly) two
> > problems:
> > 1) some kind of distortion plus modulation; more prominent when
the
> > VCO is set to 16' or 8', and EG intensity is turned up
> > 2) the presets (Piano 1, Piano2, Clav) do not make any meaningful
> > sound but only a short "blop" (or something).
> >
> > ad 1):
> > please find out more about the circumsatnces of the distortion.
> > (VCO-1/VCO-2/both, Saw/Square/Pulse wave, VCF cutoff, VCF
> resonance,
> > etc.)
> >
> > ad 2):
> > - check the connection between KLM-317 and KLM-292.
> > - select Piano1 and turn of of the pots on KLM-317 belonging to
> Piano1
> > (e.g. cutoff = VR27; make a mark on the pot before to find the
> > original setting). Listen to the sound or measure with DVM on
> KLM-292
> > on IC11/pin7 and check whether the voltage changes.
> >
> >
> > Good luck!
> >
> > Johannes
> >
> >
> >
> > 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
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>
> > >
> > > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>