Hi Alan,
Thank you very much for the info. I will check it tomorrow and will let you know.

The internal photo from my Mono/Poly is this: http://tinypic.com/r/141p7di/5 and there is not this brown pcb as you say. That's why I am asking you. I assume it is located somewhere between KLM-398 and the upper case of the instrument...

Thanks

--- In korg_mono-poly@yahoogroups.com , Alan Dicker <alanmdicker@...> wrote:
>
> Yes you can use TL072CP don't worry about the CP the number is right.
> Not sure what you mean by where is KLM-398.  Its right here in your picture.  The small brown board wit the 4 VRs on it.  You want to be looking at the board behind that the larger KLM-354 which is where IC10 that Florian mentioned is located.  You will need to remove the knob tops and nuts from the front panel and unscrew KLM-398 to see the other side of it where all the components are located.  You should then be able to locate and remove IC-10.  I very much doubt it is already in a socket unless is has been repairs before.  Usually these very common op-amps aren't socketed as standard but things like the SSM 2033 VOC chips usually are.  I find a good thick solder wick to be my preferred method of de-soldering components.  If you are unsure on your solder skills then either get a professional to do it or find some old electronic junk boards and practise removing and re-soldering components from those until you have the skill to do it well.
>
> Alan
>
>
>
> ________________________________
> From: dir_marillion <dir_marillion@...>
> To: korg_mono-poly@yahoogroups.com
> Sent: Thursday, 8 March 2012, 22:08
> Subject: [korg_mono-poly] Re: Monopoly VCO-4 prtamento/detuning issue
>
>
>  
> Sorry to correct my previous post.
> I mean where is the board KLM-398 to my board
> According the picture I sent in my first post, it is not where it should be.
>
> --- In korg_mono-poly@yahoogroups.com , "dir_marillion" <dir_marillion@> wrote:
> >
> > Hi,
> > I did not understand if Alan meant that I can use the TL072CP or not or I have to buy another chips which are only TL072 and not CP.
> >
> > I will open the Mono/Poly tomorrow and will see what I can do. Then I will let you know. If it is in a very complicated place I will not do it. If I am lucky enough and the chip is already plugged to a stand, I will replace it immediately :-)
> >
> > Really, where is the pcb KLM-354 to my revision board (check the picture I linked on my first post).
> >
> > Alan and Florian, I really appreciate your effort to help me.
> >
> > --- In korg_mono-poly@yahoogroups.com , Florian Anwander <fanwander@> wrote:
> > >
> > > Hi
> > >
> > > Florian Anwander wrote:
> > > > [everything Alan has written already...]
> > > Sorry, I had not seen, that Alan wrote everything already. I dod not
> > > want to double it.
> > >
> > > Florian
> > >
> >
>