The LightKeeper Pro can fix about 95% of all light sets. One of the light sets that a LightKeeper Pro cannot fix are those with blackened bulbs.
How does the Light Keeper Pro fix lights?
How LightKeeper Pro Works. Defective Bulb shunts cause most light set failures. Simply plug your LightKeeper Pro into the light set and pull the trigger. The LightKeeper Pro sends a pulse through the light set, finds the bad bulb, and fixes the shunt—allowing the light set to work properly.
Is there a LightKeeper Pro for LED lights?
No, the LED Keeper uses a different technology specifically developed to perform on LEDs. Fortunately, the LightKeeper Pro is able to fix incandescent holiday lights and has the required technology for these sets.
What is a bulb shunt?
In incandescent holiday lights, shunts are small wires wrapped beneath the filament.) If a bulb’s filament breaks, the shunt redirects current through the base of the bulb, maintaining the electrical circuit. A faulty shunt may sound like a catastrophic failure, but you can often fix it with the LightKeeper Pro.
How do you fix a prelit tree that won’t light?
This often occurs through rough handling or improper storage of a tree. Look to find the loose bulb, check the wires to ensure they are properly aligned, and secure the bulb tightly within the socket. This should fix the issue. If a short has occurred, the light string is usually not repairable.
How can I fix my Christmas tree lights without a tester?
Pull out one bulb at a time, and stick a piece of folded up foil into the bulb socket. If the lights come on, you know that’s the bad bulb. If they don’t, put the bulb back in and move on to the next one.
Why only half of the Christmas lights work?
If half a strand is working and the other half is not, you probably have a loose or broken bulb. Start with the first unlit bulb and work your way down, wiggling them to check for looseness. If it flickers, that’s your cue to replace it.
What is a shunt fixer for Christmas lights?
Shunts and Fuses Save the Day. A shunt is any device that allows current to continue flowing through a circuit by creating a path of lower resistance than the original path. In incandescent holiday lights, shunts are small wires wrapped beneath the filament.
Do LED Christmas lights have shunts?
If an LED fails, there is no shunt. However, the whole string of lights continues to work. A failed bulb simply shorts out, creating a path of less resistance. The current can travel through the dead LED and into the other bulbs.
What causes a whole string of lights to burn out?
The electrical current has to pass through all the bulbs in the series to complete its circuit. Usually a series contains 50 bulbs. A 100-light string has two series; a 150-light string has three series. If one bulb in a series is defective, loose or missing, the circuit is broken and the series won’t light.
Do lighthouses still have keepers?
Today, all lighthouses in the United States are automated, with the exception of the Boston Light, in the Boston Harbor Islands National Recreation Area. A law was passed in 1989 requiring that the Boston Light remain manned, so a keeper remains there today.
