Radio Shack still sells tuner cleaner.  Works good on pots & switches.

I hate going in there, but they work in a pinch.  Only place I could
find ferric chloride without paying chemical shipping fees.



--- Bob Axtell <engineer@cotse.net> wrote:

> I sometimes use carburetor cleaner which is a Toluene / Acetone
> mixture, 
> but I think Acetone will remove the POT's carbon film.
> Wouldn't plain old 90% Rubbing Alchohol not harm the film? Carbon tet
> is 
> almost impossible to locate except as a precursor or
> industrial raw material.
> 
> --Bob
> 
> Falcon Wireless Tech Support - KF4HAZ wrote:
> 
> >Does anyone know of a replacement for carbon tetrachloride?
> >I need something to clean dirty pots and switches, that will not
> remove the carbon from the pots.
> >
> >I am re-furbishing my old stereo system
> >(it is from the old days when 320w meant RMS Watts per channel
> continuous with less than .01% THD)
> >as opposed to the modern PMPO rating system that is loosely defined
> as being the Peak Max Power Out that can be obtained for a 1/2 wave
> pulse even if it means increasing the mains supply and cooling with
> liquid nitrogen and under the modern ratings THD is not taken into
> account nor is repeatability (in other words the biggest single pulse
> even if it causes the amp to blow)
> >
> >KF4HAZ - Lonnie
> >
> >_______________________________________________
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> >
> >  
> >
> 
> 
> -- 
> Note: Attachments must be sent to
>  attach@engineer.cotse.net, and 
>  MAY delay replies to this message.
>         520-219-2363
> 
> _______________________________________________
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