75 Watt 120V to 12 Volt Low Voltage Step Down Dim Ballast KTET-75-1-SCP-DIM-HV-AL

Don't believe the Juno/Acuity reps that there are no replacement parts available for the ULH Pro Series undercounter lighting. I saved over $150 by buying this transformer and installing it myself, however, the trick is to carefully color code the wires.

UPDATE- It has been ~ 7 years since I wrote my initial Review, and I am still exceedingly happy with this little product. It continues to work just fine in the JUNO under-cabinet light in our den. Just last week, another JUNO went out. This time it was a long 30” kitchen under-cabinet unit. Price to replace entire unit of that size was close to $200. I just ordered another Keystone ballast from Amazon. It arrived in a day, and since I knew already what to do, I had the dead ballast out and replaced it with the new in under 30 minutes. Problem solved! Savings of $185.! Bonus? The ballast is actually cheaper now than it was 7 years ago.INITIAL REVIEW: Recently moved into home with JUNO under-cabinet low voltage lighting. One of the fixtures was not working. Hard to believe that all bulbs had burned out, but investigated that first. All bulbs were fine. Took off cover and with a little probing with a multi-meter, found there was no juice coming from the 120AC/11DC transformer. Called JUNO, and they told me "there are no end-user replaceable parts in our units. Toss it and buy a new one" Well, at over $110 a pop at our lighting store, I decided to dig some more. Manufacturer of the transformer is Keystone. Called them and asked what is replacement for my unit. . The one here, designated ------HV-AL replaces the original which lacks the HV-AL code on the end. The HV is for higher end voltage, 12V vs. 11V in original, and the AL means aluminum housing instead of plastic. Product arrived promptly. All wiring is the same as original, same colors and all. IN ten minutes, I had swapped out the dead transformer, and the JUNO light was back in full operation. Saved over $75 on that quick fix. The Keystone folks were VERY helpful....JUNO, not so much. Vendor was excellent, and kudos to Amazon for carrying this gem.

We have some under-cabinet lights in our kitchen. After 20-years, one of the lights began to fail (the lights would go out after about 10-minutes of use). There aren't many things to go wrong in these light fixtures, so it was highly likely that the transformer was the problem. Instead of buying a new light, I decided to repair the existing one. It was a fraction of the cost, and I avoided the mini-construction project of dismounting the old light and mounting a new one.1 - I turned off the breaker that supplies power to the lights and then opened up the light fixture.2 - I read the information on the old transformer - 120v / 0.625A / 50/60HZ / 11.6V / 75W.3 - I searched Amazon for something identical. The 75W attribute was the primary thing that I looked for.4 - I cut the wires and removed the old transformer and used small wire nuts to connect the wires to the new one.Now it works like new :-)If you find this review helpful, please let me know by clicking the "Helpful" button below. I also appreciate relevant comments.

Under cabinet light

I tried a couple others without success but this little baby worked great. Small and easy to conceal as I hid it in a junction box. The dimming function works well also. I had an electronic dimmer switch. I used this with some existing under cabinet halogen puck lights. Thanks.

I had an electrician contractor install a couple of vase fountains about 2 years ago with Aqualine Power pond halogen lights and this transformer used for both fountains. The contractor placed them on the same circuit with a separate third water device which could not handle the load and caused the circuit breaker to trip whenever I had them all on.I finally had an opportunity to take the vase assemblies and electrical assemblies apart to replace both transformers. I place them on a separate circuit and they worked fine. I was able to replace the transformers easily. I don’t know how long they will last and I live in extreme heat conditions during the summers. I’ll have to wait and see.

Swapped out old transformer in a few minutes and this got the 12V cabinet lights working again.

1- Unit will not output power unless there is a load on it. (the lamp)2- Even then, most digital meters can not measure it because of it's sine wave. (Analog meter can)I was ready to give a flaming 1 star review for a DOA unit. Until I discovered that the 2 brand new GE halogen lamps I was using to troubleshoot the device were bad (what are the chances?). Tried a 3rd lamp, all is good.Seller should consider providing this information in their description to save everybody trouble.