Thought I had this sorted, but obviously not. Chandelier (!) needs 12 bulbs. I replaced a couple when I moved in three months ago. Now only two still on. Remember that they are small bayonet caps. Happy. See that there is dimmer switch. Become unhappy. Research LED bulbs and dimmer switches. Find out that they need special LED dimmer switches. Consider likelihood of this being one - think unlikely given that other bulbs seem not to be LEDs. Research availability of other dimmable bulbs. Find that dimmable halogen bulbs in small bayonet candle shapes are like hens teeth. Consider replacing all bulbs with round ones, which do seem to be available. Wonder if this is just short termism, and given the cost of lightbulbs these days whether dimmer switch ought to be replaced since LEDs seem to be being promoted as the future. Become even unhappier, as I don’t know the answer to this. Empty online basket of lightbulbs. Is it really this hard?