I bought a 5 year old house 6 years ago. There are three identical light fixtures in the walk-in closet, pantry, and utility room. All three are goofy, from the day we moved in. They will work fine for 8 months, and then work poorly for six months. When they work poorly, they will either take 30 seconds to turn on, or require being turned on and off multiple time. Then they will work fine for 8 months, before going bad again. I have tried replacing bulbs, but it doesn't matter.

I finally found a bright LED fixture that will fit in the 6" available. Any way to fix them, or should I just go ahead and replace them?

I half think the house is haunted. My raised bed garden it built with 3.5" torx head screws. One day two of the screws were out 2". That can't happen naturally, and what kind of vandal would partially remove screws? Another time a mooring shackle in 17' of water was unfastened. Who would go to the trouble?