My TZ just started having an issue that, when the ball is in the upper playfield, pushing the right flipper button ends the mode (I get the laugh and the magnets quit working). It doesn't seem to be a sensor issue; I can bounce the ball around as much as I want (by hand) and everything is fine. Left flipper/magnet also works with no problem. This only seems to happen during normal battle the power, not during powerball multiball or lost in the zone.
Any ideas?