Dynacord DRP20 - A problem with long release times in the input

[paugui]

I was testing it a bit more and it seems that it's when the sound changes slowly in volume that the clicks happen...
If I consider a sound that is slowly decaying with no sustain, I get the same clicks when the sound fades...
But both on my Korg Zero 8 and Yamaha FX900, I get no such peak in the signal as it shows up in the Dynacord DRP20...

I also noticed I got beats when I had some modulation applied in my Roland SH101, but once again, those only shown up in the Dynacord, not in the other devices that were receiving the signal from the Roland...

Does anyone here have the service manual for it (and the original manual too, by the way)?
But since the peaks in signal seems to be produced at the input, it should be an easy fix, no?


Thanks in advance
Best

Paulo

[acreil]

Something in the input portion might be mis-adjusted. I'm imagining that there's a noise gate or something that mutes the input when the signal falls below a certain level for a certain length of time, but there's an erroneous DC offset in there somewhere that makes a discontinuity when it mutes.

Just a guess.

[paugui]

But it shouldn't be a problem with the digital part of it, right?
Since the input LEDs show a different behavior from my other equipment I'd expect the problem to be with the input itself rather than the digital part...

If someone has a service for it, it would be great if you could make it available (and the users manual too, cause I couldn't find that one...).
That way it should be easier to track down the problem...

But if it should be only in the input section, that will already give quite some help too...


Thanks in advance,

Paulo