Wanted my bathroom cabinet of 2xG4 20W Halogenfunzeln on 2xG4 2.5W LED retrofit. Unfortunately, the transformer could not cope with the low load and not turned on. In mixed mode (1xHalogen / 1xLED) it worked, but was not the sense of action. Did I then worried this transformer - and lo and behold - everything was great. The transformer does have a small Delay of about 0.5sec - but do not bother me.