Garage Hound on Apr 22, 2012 - 9:03 AM I wouldn't bother putting one of these in any emergency kit.... they're just not that good of a light. They don't throw much of a beam and are rather dim because there is no focusing dish. They are meant to be seen by other people rather than put out useable light for the one it's pinned to. This works ok in pitch dark water, but in the woods or stuck on the side of the road it's not worth a hoot. If you're worried about your daughter having something she can use, a regular 2 D size flashlight in the glove compartment with fresh batteries would be worth a hundred of these. Outside of aiding in locating someone lost at sea in dark conditions, this doesn't have much use. As for repair, there's only one part that can fail and that's the switch. If you have a known good bulb and battery, check the bottom spring for corrosion. You can also use a multimeter or continuity tester to confirm connection between the bottom spring and top reflector contact. If the switch is malfunctioning, WD-40 and several dozen cycles of switching it may help restore connection. If not, the switch cannot be replaced as it's riveted to the body and replacement switches are not available. It may be possible to salvage one from a working anglehead light by Fulton.... they use the same switches. But this is a lot of work for such a relatively common item with little collector value. Send E-Mail Reply to Garage Hound Your Name: Your E-Mail Address: Message: >>Original Message on Apr 22, 2012 - 9:03 AM:<br>>>======================<br>>>"I wouldn't bother putting one of these in any emergency kit.... they're just not that good of a light. They don't throw much of a beam and are rather dim because there is no focusing dish. They are meant to be seen by other people rather than put out useable light for the one it's pinned to. This works ok in pitch dark water, but in the woods or stuck on the side of the road it's not worth a hoot. If you're worried about your daughter having something she can use, a regular 2 D size flashlight in the glove compartment with fresh batteries would be worth a hundred of these. Outside of aiding in locating someone lost at sea in dark conditions, this doesn't have much use. As for repair, there's only one part that can fail and that's the switch. If you have a known good bulb and battery, check the bottom spring for corrosion. You can also use a multimeter or continuity tester to confirm connection between the bottom spring and top reflector contact. If the switch is malfunctioning, WD-40 and several dozen cycles of switching it may help restore connection. If not, the switch cannot be replaced as it's riveted to the body and replacement switches are not available. It may be possible to salvage one from a working anglehead light by Fulton.... they use the same switches. But this is a lot of work for such a relatively common item with little collector value." Gene B Welch on Jan 16, 2011 - 3:45 PM I have an original 1 -cell D-31 Beacon Light, which has quit working. It is beyond my skill level to repair. As I have a daughter who lives in ND, would like to repair/replace for her auto survival kit. Any ideas. Many Thanks.Gene Send E-Mail Reply to Gene B Welch Your Name: Your E-Mail Address: Message: >>Original Message on Jan 16, 2011 - 3:45 PM:<br>>>======================<br>>>"I have an original 1 -cell D-31 Beacon Light, which has quit working. It is beyond my skill level to repair. As I have a daughter who lives in ND, would like to repair/replace for her auto survival kit. Any ideas. Many Thanks.Gene "