Hi Laszlo,
Thank you for your message.
I have already forwarded your steps to the Technician. He will probably check them during next week and I will let you know the results of course.
--- In korg_mono-poly@yahoogroups.com, Laszlo Kovari <friendomatic@...> wrote:
>
> 1. Set osc volumes to min and check the noise issue with open filter and
> vca. This way you can detect whether problem relates to vcf+vca or
> oscillators.
> 2. Check board to board connectors. A loose connector situation can cause
> instability.
> 3. Probably the DAC makes the noise, "pacman" like sound -> instabile CV to
> oscillators. Check if all 4 oscillators involved in the issue or just one.
> 4. Maybe a bad cap-polarity? Double check your recapping work.
> 5. Recapping makes sense in my opinion. I recapped the power supply and the
> vcf+vca board in my MP. Electrolytic capacitors have a 2000-3000 hour
> lifetime before they go out of specification. Out of spec means they do
> their jobs less and less effectively, sound becomes degraded and noisy over
> years.
>
> Laszlo
>