The issue of an LED bulb not being able to completely shut off, may apply to most LED microwave light bulbs, not just this one.As many people have pointed out, this one is bright enough on the High setting, it does flicker on the Low setting, but it also only goes to very dim in the Off setting (it can't be shut off completely). I can only surmise that the Control Board on our Maytag microwave (as most other microwaves), is not designed to handle an LED bulb over an incandescent bulb. But it maySee full review