Hi Jed,
first I'd like to thank you for what you did for the P6 itself and of course its users! Even if my P6 doesn't work yet I remain positive :)
I also appreciate you fast answer! thanks!
I fixed the R52 and R98 issues. I was hesitating by doing the last one ( lift the resistance 9 and cut the trace) I did it : unsoldering one leg of the R9 cut the trace and put a jumper between the CN 06 pin 02 and the unsoldered leg of the R09.
No more sound at all !Well, I can hear on the background the modulation if i put the gain very high of the audio amp. The knobs on the MG panel remain unusable
Before to did the fix, I was able to hear the notes played through the modulation generator which went in and out very slowly in any MG mod ( vca vcf )with a very normal volume. I'm sure that the sound is modulate because I can follow the MG led with the fade of the sound
I don't have done the VR adjustments yet because I don't have any access to an oscilloscope. But I'm not sure it will change a lot. My first target is to have the sound back without the modulation on it .
Should I put the R09 back and remove the jumper? and try something else? Or should I try to do the Don B. fix on the 368 board?
Could the problem on my P6 come from another part?
Cheers!
Vincent
--- In PolySix@yahoogroups.com, Jed Jorgensen <jed.jorgensen@...> wrote:
>
> Hi Vincent,
>
> Did you fix the two PCB errors noted here (#1 & #3):
> https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-errors
>
> <https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-errors>Also,
> did you calibrate the board following the build as per the service manual?
>
> Jed
>
> On Thu, May 13, 2010 at 3:07 PM, kluberrrrr <KLBR@...> wrote:
>
> >
> >
> > Hi everybody,
> >
> > I'm quite desperate here, so I hope someone could help me a bit especially
> > because I'm not very good in English and I'm not an electronic guy!
> > A couple of years ago I found a polysix which had the famous leak battery
> > problem, so impossible to play on it.
> >
> > I tried to repair the KLM 367 but with no success.
> > Then i discovered the Jed's project
> >
> > Today I've just finished to solder all the parts on the KLM-367A clone
> > board.
> > I put the board back on my P6. Then I turned it on.
> >
> > First, the programmer panel seems to work fine, Led button repond when I
> > push them
> >
> > BUT there is no sound at all. Just some attack sound, some 'blops'.
> >
> > When I hold a key down, I can hear the note coming very slowly and fade
> > out. Just like the LEd of the MG panel fading In and Out very slowly.
> >
> > The Mg frequency, delay and level's knobs don't affect the modulation. Even
> > if the modulation level is at 0, the sound is fully modulated
> >
> > So I guess it's the MG section which seems to not work properly. It looks
> > like it is stuck on a very slow frequency and there is no way to cut the
> > modulation.
> >
> >
> > Also cutoff, resonance, eg int, keyboard track knobs don't seem to change
> > the sound.
> >
> > When I built the new Jed's PCB, I used from the old board the mask rom IC,
> > the TC5514APL-3 IC, the two LM13600 ICs and the 2SA798
> >
> > What do you think? Is it possible that one of the Ic is dead? Or does it
> > look like the problem is deeper?
> >
> > Please excuse my poor english !
> >
> > Cheers!
> >
> > Vincent
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>