I have a buzzing sound coming from in ceiling Liton LH1499IC light fixtures (not the bulb): https://liton.com/ic-double-wall-housing-51083.html These fixtures are connected to a dimmer switch Buzzing gets worse: over time (as the light stays on) with full brightness if I completely remove the bulb but have the dimmer ON when changing bulbs from 12V 50W (recommended by fixture) to 30W or 5W Could there be a relationship to the dimmer switch? The dimmer has no sound or buzzing whatsoever. But i...