This morning I found that the strip of halogen lights in the basement weren't working. When I turn the dimmer on, the transformer "hums"- no lights....Is it the transformer. or the dimmer switch?
As a diagnostic aid - remove the dimmer and replace it with a standard light switch - then you'll know - transformers usually work or they don't work - they go open circuit (sometimes short circuit) - if your transformer "hums" it suggests it's taking power and is probably OK - I suspect your dimmer to be the culprit. But do the test...
Good luck...
Peccavi
November 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix lighting.