You know the kind I'm talking about, they have the ceramic bricks in them that turn red. Anyway, we have one at the end of the hall in our house, looks to be fairly new (just bought the house a year ago) and it just up and quit. I replaced the thermocoupling but it still won't light. The pilot will light, but when you go to turn the knob for the bricks to light up it just goes out. These things look super simple to work on but I have no idea what to look for.