Hi:
I have a Fenix L2S that flickers out when the bezel (head) is loosened to achieve the "low" brightness setting.
I tried to fix it by:
1. Wire brushing the threads shiny clean.
2. Applying a coating of Nyogel 760G grease to both halves of the threads.
3. Reassemble and screw the threads back and forth a few times.
The result was that the light worked perfectly, but only for about 2 days. Then the threads must have oxidized again despite the grease so that it just won't light again in low mode.
I have considered silver filled conductive greases with low volume resistivities suitable for real current flow through the grease (see note below), but they are very expensive. I suspect that the machining tolerances on this light were loose, so that there's just too much space in there. Even a conductive grease might not fix it unless it is certain to also keep the Al surface from oxidizing again, which is difficult to guarantee.
Any ideas? Do you think conductive grease would fix it?
Note: There are "conductive" greases which are really not able to carry current but rather are designed for ESD dissipation. I doubt that these types are the answer here. Only the metal filled greases have low volume resistivities.
I have a Fenix L2S that flickers out when the bezel (head) is loosened to achieve the "low" brightness setting.
I tried to fix it by:
1. Wire brushing the threads shiny clean.
2. Applying a coating of Nyogel 760G grease to both halves of the threads.
3. Reassemble and screw the threads back and forth a few times.
The result was that the light worked perfectly, but only for about 2 days. Then the threads must have oxidized again despite the grease so that it just won't light again in low mode.
I have considered silver filled conductive greases with low volume resistivities suitable for real current flow through the grease (see note below), but they are very expensive. I suspect that the machining tolerances on this light were loose, so that there's just too much space in there. Even a conductive grease might not fix it unless it is certain to also keep the Al surface from oxidizing again, which is difficult to guarantee.
Any ideas? Do you think conductive grease would fix it?
Note: There are "conductive" greases which are really not able to carry current but rather are designed for ESD dissipation. I doubt that these types are the answer here. Only the metal filled greases have low volume resistivities.