I had just wanted to state some facts before I state the real purpose of this post...
I have had the P0 from 4Sevens for 1 week and love it.
The first thing I did as most do is clean, lube and put a fresh eneloop.
Fist Occurrence:
When I first open the package and tested out the light it would go to low with the first turn. Then the second turn would look like a little brighter than low, then go to high. This being just like a soft start with a digital IC.
First Solution:
I had cleaned, cleaned and cleaned!!!!! Then it seemed to go away for the rest of the week. So I had written off the problem, no biggie!
Second Occurrence:
Today when I changed my eneloop it had started acting weird. Then I got to the 10th, 11th or 12th page on this thread and seen that there is one other with the same issue that was here to stay.
Second and final solution:
I had taken the foam ring out of the head and started to look around and seen that the packaging on one of the six leg IC's is chipped off at the corner, thus exposing more of the leg. This is what was making intermittent contact with that larger pad of the positive end of the eneloop as stated earlier.
As having good eye sight i see that the leg of the IC had lifted off the pad so slightly that it was making intermittent contact with the PCB. So I soldered that leg on with my solderpro butane iron, which comes with a rather flat blunt tip. So taking my time and prepping the iron to have a nice light fresh coat of solder. Then soldered the leg. Then proceeded to the positive contact area of the board and it is a cap that is soldered to flat positive contact on the PCB, so extra precaution is needed as stated earlier by another poster. So please use surface prep pen or liquid flux as this is going to need very high heat for a short period of time as it will lift off if not careful and its not going to be fun to put it back with such little room, as this is a tiny light! : P
I am very happy with the light, before and after. Great job 47's and glad I own a second as I always grab a spare when I find something awesome.
I like, scratch that, I love fixing things as its my knack being an EE. Its fixable and the only fix that 47's could do is just raise the contact point 1mm and BAM!
The only thing I would like to request to make this light awesome is to make a optional pill that came with "X" emitter(Preferably an XML T6/U2). Again its just a request and would like to have the light be modular to an extent like ARC does.
Thanks,
Eric Ramirez