On one of my Strats, the tone control stoped working (not that I use it much at all). The treble was the same until turned all the way couter-clockwise (ie 0 resistance), at which point I lost all signal. So, I took the pickguard off, and a visual inspection revieled no wiring faults. I then started taking resistance measurements with my multi-meter only to find out that there is no reisistance between each side of the cap. I don't have an extra on hand to be sure, but shouldn't it pose infiite resistance to DC (which is what the multi-meter reads)? Is my capped ruined/shorted?