Troubleshooting: Difference between revisions
fix blf link
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Sometimes the circuit from the switch is completed by the body tube screwing up tight against the driver in the head of the light. The body tube end will be bare metal (if the threads are bare metal, then this isn't as big a deal). Make sure the end of the body tube is clean. | Sometimes the circuit from the switch is completed by the body tube screwing up tight against the driver in the head of the light. The body tube end will be bare metal (if the threads are bare metal, then this isn't as big a deal). Make sure the end of the body tube is clean. | ||
If power is making it to the head, it still has to reach the driver and sometimes there is a gap between the outer ring holding the driver and the driver itself. In most Chinese-made lights there is a blob of solder that bridges this gap, but it may not be making good contact or could be missing. There is a good example of this here | If power is making it to the head, it still has to reach the driver and sometimes there is a gap between the outer ring holding the driver and the driver itself. In most Chinese-made lights there is a blob of solder that bridges this gap, but it may not be making good contact or could be missing. There is a good example of this here: [http://budgetlightforum.com/node/932#comment-13924 poor soldering]. If you have a soldering iron, a quick blob of solder will fix this problem. | ||
If these measures fail, it gets more complex.If you remove all the problematic contact points and put the head of the battery against the positive contact in the head and then connect the tail to the outer rink on the driver, and the light still doesn't light up, then the driver could be dead (only way to fix that is with a new driver) or the LED could be burned out (unlikely unless it looks brown instead of yellow). Or there could be a bad solder connection either to the star that the LED is attached to, or with the leads that connect connect to the driver board. | If these measures fail, it gets more complex.If you remove all the problematic contact points and put the head of the battery against the positive contact in the head and then connect the tail to the outer rink on the driver, and the light still doesn't light up, then the driver could be dead (only way to fix that is with a new driver) or the LED could be burned out (unlikely unless it looks brown instead of yellow). Or there could be a bad solder connection either to the star that the LED is attached to, or with the leads that connect connect to the driver board. | ||