My FW3A won’t work or was working but quit.
If your FW3A quit working or does not work, check these two things first.
1. Is the battery sufficiently charged
- If not, charge it
2. Is everything tight
- Driver retaining ring - check for tightness & tighten if necessary (see details below)
- Loosen the head
- Tighten the tailcap very tight
- Then tighten the head very tight
If this fails to make your FW3A operational go HERE
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Driver Retaining Ring
A loose driver retaining ring can cause an issue. That issue is described below along with the simple solution.
Firelight2 wrote:
Discovered an issue today:
Several times now after inserting the battery at the head and then screwing closed the light I’ve noted that the head sometimes stops screwing down a couple mm before it should. This appears to be caused by the inner switch contact tube being slightly off-center and hitting the edges of the narrow driver retaining ring. When this happens the inner tube does not make contact with the driver and the light does not work.
If this occurs, the light can still be screwed down by unscrewing and then rescrewing the head in several times until things line up right. But that doesn’t solve the problem and is frustrating to do. This issue occurred with both my FW3As.
Analysis and Solution:
The problem appears to be caused by the driver retaining ring not being screwed tight to the driver at the factory. If you encounter this issue, use tweezers to turn the driver retaining ring so that it is flush against the driver. Once the retaining ring is snug, this problem goes away completely.
Driver Retaining Ring: Loose / Installed
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steel_1024 wrote:
In addition to tightening the retaining ring.
Also align the 2 notches shown in the figure below.
NOTE: This driver retaining ring is very thin, but it is there. If you do not have the proper tweezers, a nail, toothpick, pointed fingernail file, etc. may be used to tighten a loose retaining ring.