I bought the Tank 007 E09 after much research and have carried it every day for a year.
Now, it suddenly won’t turn on. I tried fresh batteries, but no go.
Is it just dead? I don’t know much about these lights.
Thanks,
DIAMOND
dirty contacts perhaps? try cleaning the threads/contacts with alcohol or lighter fluid and see if it works?
sometimes the grease or oxide could stop things from working.
Thanks for the suggestion. No go. :_(
I tried your suggestion and cleaned all of the contacts. I even pulled out the spring in the tail end and cleaned that and where it seats in the tail. But it still won’t turn on.
Looking at my E09, it looks like the threads are anodized.
In other words, the contact path is from the unanodized FRONT EDGE of the battery tube HAS to make contact with the ground ring on the battery side of the driver.
I don’t know if you can do this, but the normal advice would be to try to do a test without the tailcap, but in this case, you’d probably have to use two wires connected to a battery with probes on the ends and touch the positive wire to the center pad of the driver and the negative wire to the ground ring of the driver, in order to test the driver+emitter.
If that is ok, then probably the front edge of the battery tube is not touching the ground ring when you screw the battery tube all the way in.
Another great suggestion and this one worked! If I connect a battery direct using wires and no tail cap (battery tube), the light comes on. I’ll have to give all contact points a VERY thorough cleaning. I’ll report back and let you know.
Thanks!
Good job! Then it could be something is preventing you from screwing it all the way in? Maybe the O-ring is messed up or something?
Jim
A great group here with fast and good replies. Thanks!
I fixed it with your help. 
I pulled the tail end spring out and gave the larger end a slight bend so that it would protrude farther down into the end of the battery tube to make a more positive contact with the tube.
This worked and my wonderful little mighty light is up and running and back home in my pocket where it belongs ready for service whenever duty calls.
Thank you people!
So you just did your first mod/repair? Congratulations :)!!
Glad we were able to help :)!
Best Forum on the Internet©, Just sayin…
My first flashlight mod for sure. Thought she was a gonner.
I love this little light. Like I said, I’ve been carrying it for a year and can say that it has been a great light.
I enjoy that small size (about the size of the tube of Chapstick) and I like that it takes AAA, which are common enough, though I use NIMH for my daily carry. But always nice to know I can stop in just about any drug store or gas station and get a battery if I need one.
This little light is clipped in my pocket everyday without fail and hangs out with my Gerber Dime, which I really like having on me too. Both have come in handy countless times. They make a great couple.
Here is a pic of them with my homemade pocket tangle clip.
One caution — a lot of springs have sharp ends where the wire was cut, usually that sharp bit is turned back into the center so it doesn’t dig into the cell.
So to extend the spring, you want to do this without creating a sharp point where the spring makes contact with the base of the battery — that may take two bends, one to make the spring extend further into the battery tube, and another bend back to make the last turn of the spring still (as it should be) present a flat edge, not a sharp-cut-tip.
Because as you turn the tailcap, if there’s a sharp point on the spring, it will gouge a groove into the base of the battery and keep gouging. That can cause a leak eventually; more to the point (ouch) if the contact is just a sharp little point it will fix your intermittent problem briefly by digging into the battery, but that spot will get dirty again faster.
That may not be clear without a picture.
Excellent point. My bend actually points down into the bottom of the battery tube. The part that contacts the negative battery terminal is stock and unchanged.