| previous by date | index | next by date |
| previous in topic | topic list | next in topic |
Hi Frank
Issues reported seem very strange.
I can't figure out a 7th and 8th notes failure on a six cycling voice synth.
In other posts seems that VTL5C9 is the best replacement for the PC1, some overcurrent caused by VTl5C1 maybe fried some IC / resistor / polystyrene capacitor?
Regarding the leds that don't light up on boot, have you already checked the reset signal from KLM367 as described in service manual calibration notes?
On KLM367 there's VR1, you must mark with a permanent the position, if you turn it clockwise all leds on panel will light up.
Then you can turn it on other side until the leds lights off.
to be more accurate, you can jack a dummy 56Kohm to the 3 pole plug on KLM376 and follow exactly the operations shown in service manual.
Issue you describe seems more like a stuck chord mode than unison mode.
---In PolySix@yahoogroups.com, <dko4342@...> wrote:Hi
My P6 has started having a new issue.
The synth sounds really weird. Here are the symptoms:
- When I boot it, it comes up with the arp on, and none of the assigner
LEDs are lit.
- All settings sound a bit like a unison note gone totally out of tune.
- Freq does not change with different keys, but scaling of the filter
seems to follow keyboard
- Every 7th and 8th note of the keyboard is silent. The keys in between
trigger notes (the same one all the time)
I suppose this is an issue with the assigner board(?), but have no idea
where to start. I recently replaced the optocoupler with a VTL5C1 and
cured the keyboard scaling issue. I don't think this is related, but
then you never know, do you?
Any ideas?
/Frank