On a related tangent.. We installed a basic home-centre style range hood over the gas range in our kitchen. For the first few months it used just a regular pair of PAR20 halogen bulbs for the built-in lighting.

The unit has a three-step electronic dimmer circuit for the lighting, plus "off".

After a while, we got around to trialing LED PAR20 bulbs in the same unit, carefully monitoring to see if the plastic bulbs suffered from the stovetop heat. So far so good on that front, but..

Wandering to the kitchen for a midnight glass of water, I noticed the fixture was "on", though quite dim. Turns out, it is like that all of the time when supposedly "off". There is some leakage current always flowing, never enough to illuminate the halogen bulbs, but sufficient to light up the LEDs (dimly).

So that got fixed pronto, by hardwiring a new switch into the fixture to turn it completely 100% off, electronics and all. Such a senseless waste of power.

Cheers