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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