Sorry for the long post, but I am stumped and in urgent need of help and wanted to provide answers to questions that you may ask to help troubleshoot. I have exhausted all other options that I can think of, so I am putting this question out to the LOR and PC users. This is my 2nd year with LOR and my first year with LED's. I replaced my roof C9 Incandescents with new C9 LEDs this year and now I am having problems. I have 4 LOR Units that I am using. All are the LOR1602 - 30 amp controllers. I am currently using 1.6.1 software. PROBLEM 1: The C9 LED's I am using are making a buzzing sound everytime they turn on no matter what, when I am using LOR. When I plug them in normally in a regular outlet, they don't seem to make the buzz. I mean this buzz is fairly loud. You can hear it from about 20-30 feet away from my roof and they are on a second story about 30 feet above the ground. The buzz is also happening inside my home's electrical panel when the LOR is running. In addition to that, it's making all the battery backups on other devices in my house go off (like a temporary loss of power) whenever LOR seems to hit the notes in a sequence that are 100% on. These devices (batter backups) are not attached to anything related to LOR or even on the same circuit. They are on a separate circuit breaker box. My home has 2 150 Amp Circuit Breaker Boxes and the Xmas Circuits are spread out among the boxes and neither are using 80% or more of the allowed amount even with the rest of the house fully on. PROBLEM 2: In addition to problem 1 above, whenever the show runs a few times through, my LOR box that's powering my roof lights go off and shuts down. It doesn't trip a breaker and doesn't blow a fuse. It just crashes like a fuse was blown or breaker tripped. I tried swapping out LOR boxes with another unit and the same thing happens. I have 3 sets of 500 roof lights. Each different colors that alternate (like Richard H of PC). Each string pulls only about 4.5 amps or so. I have them spread out across the lor, so the AMPS shouldn't be a problem and nothing else is plugged into that box. I did try it with other items plugged in and had the same issues. SOLUTIONS TRIED All the circuits were installed by a professional electrician, so no screwing around on my part. I had the electrician come out again today and he couldn't figure out the buzzing or what the problems were. Everything checked out good. He even went so far as to replace every single breaker that they installed this year and last with new ones to see if that helped. He was at a lost and has never seen the problem before and he was the lead electrician from the company I used. I also replaced all the fuses in the box with new fuses and no change there. Like I said above, I even swapped out LOR boxes and no luck. Any ideas would be greatly helpful. I tried the search function and couldn't find anything related. Thanks in advance!