Another type of Christmas light tester forces AC current into the defective shunts, which causes the good bulbs to light. In this case, a hum tracer won't be able to pinpoint the bad bulbs because multiple defective shunts have broken the circuit and no AC current is running through that particular section of wire to produce a hum. If you encounter a successive number of bulb wires with no hum, you're dealing with more than one burned-out bulb. When there is only one bad bulb and shunt, the hum tracer might find no hum at the adjacent bulb wire rather than the defective bulb itself, but one of the two wires will have no hum. You need to test only the bulb wire, which you can do by pulling it away from the other two strands. One strand is the live AC current, or 'hot' wire another strand is the grounded, or 'cold,' wire and the third strand is the bulb wire. When using this type of tester, it's important to know that three strands of wire connect the bulbs. The LED light goes out when the hum lessens noticeably.Īt that point, you've found a burned-out bulb. You start at the plug and follow the wires of the Christmas lights into and out of each socket.Īn LED light on the unit stays lit when it detects a hum. Using Christmas Light Testers A hum-tracer tester works by detecting the electromagnetic vibrations generated by household electrical current. Directions for christmas light tester - Welcome. Check out our video for visual instructions! Not for use with LED Christmas lights. Other features include mini light tester, bulb remover, fuse tester, and C bulb tester. 4-functions to test and remove mini lights. Save your Christmas Lights with a Westinghouse 28540 Bulb Tester. It has an LED light indicator and comes with a convenient pocket clip. This Stanley 4 in 1 Christmas light tester will test light strings, light bulbs, light fuses, and will remove light bulbs. Light testers are designed to find the defective bulbs without you having to remove every bulb from its socket.įrom the Manufacturer. Even if you find the burned-out bulb, you might be putting in a replacement bulb that isn't seated, and the string still won't light. But this method takes a lot of time and isn't foolproof, since you can't always tell whether you've managed to position the bulb in the socket correctly. You can check each individual bulb by replacing it with a bulb that you know to be good. However, these shunts often fail, and the result is the same as if they didn't exist: The entire string of lights goes off. When the shunts function properly, it's easy to spot the defective bulb. Newer light sets have a shunt, a small piece of wire, inside each bulb that maintains the connection when the filament is gone and keeps the other bulbs lit. When a bulb burns out, meaning that the filament that actually produces the light has evaporated, it breaks the connection, and the whole string of lights goes dark. CAPRICORN CHRISTMAS LIGHT TESTER MANUALLY SERIAL NUMBERRslogix 5000 Serial Number Product Key there. Promoted by The Basics Christmas light strings are wired in series, which means that every light must be functioning in order for the string to be lit. CAPRICORN CHRISTMAS LIGHT TESTER MANUALLY MANUALCapricorn Christmas Light Tester Manual 9,6/10 6385votes
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