I have a Hampton Bay Antigua fan with an add-on light kit (4 bulbs). I also purchased the wall mounted remote control. It worked fine up until a few weeks ago. Now, all four bulbs are extremely dim. I've tried higher wattage bulbs but there just doesn't seem to be enough power to light them adequately. There is no 'dimmer' switch that I am aware of. Any thoughts on what could be going on?