LIGHTKEEPER PRO Plus 100 Bulbs…

This device can help you solve every problem that can happen with strings of miniature bulbs. Our artificial tree is 8ft tall with 1500 bulbs on 15 strings. We bought the tree in 2014 and got the Lightkeeper pro in 2015. Over 8 years we have replaced more than 400 bulbs (20 to 100) bulbs every year, the LightKeeper Pro makes it easy to find the problems. 1. The most common light problem is just that a few bulbs on a string burn out, those are easy to find without any tool. Just replace them right away, if you don't lots of bulbs will start to fail due to the rest on the string getting overloaded, so fix them asap! Sometimes when a replacement bulb doesn't light, you can test the bulb with this tool, to see if its actually ok and you just didn't seat it right. 2. Every year when we take the tree out again, some strings will not light up at all. This often means that a bulb mechanically failed, maybe a filament broke or bulb came out of a socket. You can power the string and use the tool beeping to trace the wire to find where the current flow stops. Then reseat the lamp or bulb or replace the bulbs.3. Sometimes strings don't light because multiple bulbs fail without fusing. You can plug the string into the tool and press the trigger 30 times to zap the failed bulbs to get them to allow current to flow to the rest of the string. Then when you power the string, most of it will light up and you can replace the dead bulbs as usual. We've had our tree a long time, but it takes a couple of hours every year to keep it working. If you don't replace failed bulbs right away, you will drastically shorten the lifespan of the remaining bulbs, and your tree will not last. We would not be able to keep up the tree without the LightKeeper Pro.

Packaged shipped quickly, so I was glad for that. I watched a couple videos on youtube and went to fix my own pre-lit tree lights that were out. It's a three part tree, but only half of one of the strings was out. Before I bought the Light Keeper, I tried manually to find the bad bulb, pulling each one off and using a meter to test. Waaayyy, too long. I knew there had to be a tool out there to make it easier and I came across this device. It arrived, and I tried the shunt fix first - simply pulled an unlit bulb, inserted the socket into the LK, and pulled the trigger about 10 times and the lights came on. I put the bulb back, but they went off again, so I did it again with the same results. Then I waited a minute and put the bulb back in and voila, the lights all came on. I then used the replacement bulbs that came with the LK to replace several bulbs that were out.I also used it on a garland which was half lit. Same results, except it worked instantly after a couple of pulls of the trigger. I also needed to replace several bulbs and it was all back in action.I wish I would have had this last year - it would have saved me front de-stringing and restringing another pre-lit tree.So definitely a 5 star review - I didn't even have to go past step 1 of the tests.

We got this after buying a light up polar bear from a yard sale for just a couple bucks . I went to plug it in and only half of it lit up! From the reviews, it seems like this did a good job with exactly my situation.I handed it to my husband to let him work on it (I was busy that weekend), and a few short minutes later, he called me outside to show me the fully shining bear. According to him, this was great - easy to use and did exactly what we needed to. Compared to the cost of buying a new giant holiday light, it's a no-brainer.He did say we should take off a star because "it feels like the tool has more capability than they tell you about." It comes with a bunch of spare lightbulbs so it should last awhile.

Just got this today, tried it, and it didn't work for multiple sets of lights. Here's why. I think ALL the bulbs are burnt out, and this device is useless in that scenario. How did this happen? The manufacturer downplays this scenario, but when you have a strand of Christmas lights connected in series (the most common type), and one goes out, even if the shunt works for that burnt bulb, the remaining bulbs see a higher voltage and will burn out more quickly. When the next one burns out, the voltage goes even higher, which shortens the life of the remaining good bulbs even more. This leads to a cascading effect where, eventually, all of the bulbs will burn out completely in rapid succession, not a single good one is left. This device may work in the rare circumstance when you have just one bad bulb in an otherwise good strand and the shunt didn't work properly for that one bulb, but not in the most common case I just described. They sort of admit this on a small white piece of paper that they include with the device (in one short sentence), but, of course, this is not well explained before you buy it. For this reason, it is a waste of money for me, and image for many people in the same circumstance. Save your money and just buy a new strand of lights. I wish I would have realized this before buying, but oh well. The bulb and fuse checker might be moderately useful at some distant point in the future, but as of right now, it will collect dust on the top shelf.

Had a Christmas tree which only the top lights worked on. Bought this tool, followed the instruction 100% and did 30 “pumps” with the guy....and the entire tree became dead!! turned out it killed over 60lightBulbs which I ended up having to replace. The irony is that the light bulb checker worked great to check which lights the gun killed. I would not recommend this tool for anything else then check bulbs...