Korg Mono/Poly

Hi

hoggybogger schrieb:
> The only sound I seem to be able to get out of this, with it 
> completely cranked up, is when the noise potentiometer is turned up, 
> and the resonance and cutoff turned up. I can get a very faint hissy 
> noise when I'm playing, and if I turn the resonance and cutoff while 
> playing it changes the noise like you'd expect it to. Just almost 
> completely inaudible, this was all the way up and then fed into a 
> mixer with the gain all the way up.
This is good. It says the SSM2044 is not broken.

> I took the knobs off and backed the nuts off the pots, and took the 
> CN16 connector off and measured pin 3, but I didn't seem to be 
> getting anything. Should I be measuring it from the wire harness that 
> goes into it? That's where I measured it. I could be doing something
> wrong. I did not check the CN2 pin 3, I was having difficulty finding 
> it and had to quickly come up with an alternate solution for 
> performing this wednesday night. 

Basically I still think it is something not very troublesome; maybe the 
low/mid/high-Levelswitch or the volume potentiometer is dirty or (in 
worst case) broken. But both you could temporarily heal by bridging them.

You may try to measure (or listen with an cable) to the following 
testpoints:
http://fa.utfs.org/diy/korg_monopoly/mp_13_klm_353_layout_testpoints.jpg
http://fa.utfs.org/diy/korg_monopoly/mp_14_klm_355_layout_testpoints.jpg
These show the pcbs from the solderside, so you don't have to remove the 
pcbs from the front. The testpoints are marked yellow.


Florian