LED UFO Repeated Failure - Thoughts?

[TipsyMcStagger]

I recently replaced old metal halide fixtures with these LED UFOs. There are 11 fixtures in total. Three rows of three and one row of two. Each row is separately switched. Standard wall switches. No dimmers.

With less than two hours use, one of the fixtures in the row of two started to fast flash and failed. I figured it was a fluke and the seller sent a new fixture. I installed the replacement. In less than one hour, the fixture in the same location started to fast flash and failed.

I've verified voltage at the fixture (115V), cleaned the grounds and changed all three Wago connectors. But that all seems moot because I have verified both units are failed on the bench with a separate power source.

I am at a loss. The metal halides, though old and not very bright, never skipped a beat. I can't fathom what could cause two UFO fixtures to fail in quick succession in the same location. Is it simply possible this is a double fluke and we've received two faulty units?

Or could there be something about this particular circuit that's inducing a failure in this one location?

Any thoughts are greatly appreciated.

 

[kbuhagiar]

I am at a loss. The metal halides, though old and not very bright, never skipped a beat. I can't fathom what could cause two UFO fixtures to fail in quick succession in the same location. Is it simply possible this is a double fluke and we've received two faulty units?

Or could there be something about this particular circuit that's inducing a failure in this one location?

Any thoughts are greatly appreciated.

Yes, if they both came from the same manufacturing batch. Very possible.

I would notify the vendor about the anomaly but hold off before returning to see if any of the others exhibit the same behavior.

When I worked in IT we would always allow for a 72-hour 'burn-in' on all new electronics; 99% of defects will make themselves known by then. If you get past 72 hours you're usually gold.