At 07:21 AM 12/17/2010, VWQ47 wrote:
>Has anyone experienced an issue like this?  Where should I look?  I'd
>appreciate any wisdom people have.

Check your switches, unplugged.

Column switch

As it sits:  continuity from 56 to one of 56a or 56b; no other
continuity from any terminal to any other.
Full click and release: change between 56a and 56b, no other change.
Partial pull: 30 to 56a (and to 56 depending on above).  No other change.

Panel switch:

Off: no continuity any terminal to any other except 58b to 58 (panel
dimmer) and 30-30.
First click: either 30 terminal to 58, and 58b through the panel
dimmer resistor.  No other continuities.
Second click: as above plus X terminal to 56 terminal.  No other continuities.

Report results.  If switches are ok we'll look at wires.

Yrs,
d