Florian! No change in the behaviour when I move the fader, and no improvement in response to a blast of contact cleaner into the fader slot from outside the case. Would this indicate the fader or the op-amp

I really appreciate the help!
ryan

--- In tr-707@yahoogroups.com , Florian Anwander <fanwander@...> wrote:
>
> Hello Ryan
>
> > I had already identified the distortion on the handclap/tambourine channel. I plugged a cable into that out and voila! The main outs are clean now.
> >
> > So.... where do I go from here
>
> Now check (without the cable in the single out) whether moving the fader
> of the handclap/tambourine channel does change the behaviour.
>
> My main suspect is this fader. Inspect it and clean it (unsolder, open
> the clamps of the housing, clean it with a q-tip and Caigs Faderlube 5,
> remount the housing, resolder it).
>
> The second thought goes to the Dual-OpAmp IC204 on the mixer board.
> Either it is broken or shortend by some thing (too much solder Metal
> flake ). But this dual opamp is used also for the hihat, so it would
> mean that only one of the two opamps in this chip is broke.
> The Opamp is a M5218L (SIL-Version). As far as I know it is no longer
> produced but still available at most electronics suppliers.
>
> Florian
>