If it has been a long time since you have changed the AAA batteries inside the puck lights, try replacing them and see if that helps. The lights may not get as bright as they’re supposed to if their batteries are running low on power. You should also check that the puck lights aren’t on their lowest brightness setting. Try using the wireless remote to increase their brightness to the highest level. In addition, make sure that the lights are fully clean of dirt, dust, or other debris, and that they are not visibly deformed or malfunctioning in any way.