Believe it or not!!! Even older fixtures had early failures! I often in neighborhoods that originally had Westinghouse MO-8s from early 60s get new replacements with late 60s early 70s Westinghouse NEMA fixtures and GE M-250R1s and even OV-15s as replacements! Believe it or not. It may just not seem like it, but it's pretty true...even older fixtures and lamps have had early failures. I mean when you see a row of older fixtures but you see a few that are old too but just maybe 5 years or 10 years newer....sometimes that is a replacement of previous fixture....but other times it's just added later...
Like the newer M-400's, in fact there was one that cycled all the time in New Kensington PA that was recently replaced with a 1000 watt metal halide streetlight.
Yeah, the new M-400 has a bad tendancy to cycle. Close to but not as bad as the Cooper fixtures. I notice it in 200 & 250w HPS drop lens M-250R2s, but not the FCO M-250R2s.
How on Earth did it get like this?...lightning Strike it or something?