Hello.
I have what I can best describe as a very small problem with a Surefire E1B, but it's not something I can diagnose myself.
So, when the light hasn't been used for more than an hour or so, when I first turn it on there is a quick flicker, then it continues as normal on high. Turning it off then on again there is then no flicker. The longer it hasn't been used for, up to a few hours, the more times this happens before it settles. Not using it overnight for example and in the morning it will do it 3 or 4 times. It's almost as if the head needs to 'wake up'.
The most obvious cause would be the battery, tried that, ruled it out. I have tried numerous batteries, including nearly depleted ones and batteries that are very cold, having been in a car overnight, still the same. Once the head has 'woken up' using a different battery makes no difference, to get it to do the same thing again I have to wait a few hours.
I should probably explain more what I mean by flicker. Maybe a better description would be 1 or 2 pulses of strobe, then settling on high, so it is a very fast process, literally a case of blink and you'll miss it, but it definately does a few more depending on how long the flashlight has been out of use.
I also considered the tailcap. I had no idea how or why a tailcap not being used for a few hours would cause such a thing, but in the interests of testing I tried 2 other tailcaps and ruled it out as a different tailcap makes no difference.
Finally, it actually did this once before, shortly after I got it, but I assumed at the time that it was a battery starting to go, I changed it, and the flicker didn't happen again so I forgot about it.
If you used this E1B all day every day, but you happen to blink each morning when you first turned it on, you'd be unlikely to ever see the flicker, so it really is a minor problem. The reason I'm curious is because there is a pattern, and it's not something I've come across myself before, or read about here on the forum. So, anyone have any ideas?
I have what I can best describe as a very small problem with a Surefire E1B, but it's not something I can diagnose myself.
So, when the light hasn't been used for more than an hour or so, when I first turn it on there is a quick flicker, then it continues as normal on high. Turning it off then on again there is then no flicker. The longer it hasn't been used for, up to a few hours, the more times this happens before it settles. Not using it overnight for example and in the morning it will do it 3 or 4 times. It's almost as if the head needs to 'wake up'.
The most obvious cause would be the battery, tried that, ruled it out. I have tried numerous batteries, including nearly depleted ones and batteries that are very cold, having been in a car overnight, still the same. Once the head has 'woken up' using a different battery makes no difference, to get it to do the same thing again I have to wait a few hours.
I should probably explain more what I mean by flicker. Maybe a better description would be 1 or 2 pulses of strobe, then settling on high, so it is a very fast process, literally a case of blink and you'll miss it, but it definately does a few more depending on how long the flashlight has been out of use.
I also considered the tailcap. I had no idea how or why a tailcap not being used for a few hours would cause such a thing, but in the interests of testing I tried 2 other tailcaps and ruled it out as a different tailcap makes no difference.
Finally, it actually did this once before, shortly after I got it, but I assumed at the time that it was a battery starting to go, I changed it, and the flicker didn't happen again so I forgot about it.
If you used this E1B all day every day, but you happen to blink each morning when you first turned it on, you'd be unlikely to ever see the flicker, so it really is a minor problem. The reason I'm curious is because there is a pattern, and it's not something I've come across myself before, or read about here on the forum. So, anyone have any ideas?
that is coming my way 
