The LightKeeper Pro provides you with a third way to repair your light sets. You can test individual bulbs and fuses. The Bulb Tester is designed to accommodate miniature light bulbs. With this method you can determine if a defective light bulb is the cause of lightest failure. Replace any bulbs that fail to light. Make sure to do a visual check as you replace the bulbs. This is to verify that the thin copper wire of the bulbs makes a solid connection with the brass contacts in the socket.

The Fuse Tester, is designed to check 3 Amp fuses that are supplies with most miniature light sets. The fuses are in the plug of the light sets and are designed as a safety feature to trip if too many light sets are plugged together. A sign that you have a fuse problem is when you notice multiple light sets connected together that do not work.

If you believe it is a fuse, remove the fuse from the plug per manufacturers’ instructions. Place the fuse in the Fuse Tester on top of the gun, being sure the fuse touches the metal contacts on either side. If the fuse is good, the RED LIGHT on top of the gun will light.