DulcimerBoy05

When it comes to sound equipment, I'm not very tech savvy. Hopefully ,someone here can help me probably troubleshoot my issue. I currently have a BOSS Katana MKII 100 watt amp. I have been connecting my Helix LT to the amp using the Power Amp In input in the back of the Katana, while plugging into the Left/Mono 1/4" output on the Helix. When playing I've always had a buzzing sound in the background. Today I tried to troubleshoot it, and I discovered a few things. 1) The buzzing starts immediately when I plug the amp into the Helix, even if the Helix is off. As soon as I unplug from the Helix, the buzzing in my amp goes away. 2) If I plug into the Right 1/4" output on the Helix, I get no buzz. Even after I turn the Helix on. I also tried plugging into the top input of the amp and it had no effect on the buzzing. It seems to me there is some issue with the left output on the Helix. While I could just use the right output going forward. I would still like to know what is causing the buzzing in the left output. I'm not sure if it's an issue with my amp or Helix. Any thoughts on how to further troubleshoot the issue? it might be as simple as I have a bad left output and need to submit a warranty claim. Also, how much in quality of tone am I sacrificing if I just use the right output going forward? Everything I read online says when plugging into an amp you need to use the mono signal.

So, I purchased a HELIX LT this weekend. After spending a few hours trying out the different factory presets, I settled on one labeled "Placater Clean". I liked the sound it provided for a few songs that I had to play on Sunday for a worship service. I only made 1 slight edit, I changed the chorus effect. Unfortunately, I was also having some software issues with my unit. Sometimes on boot up I would receive the "Boot Failure, Entered Update Mode" error message. Other times it would boot up fine, but at some point the unit would freeze and I wouldn't be able to navigate to other presets (or even toggle effects on/off on the preset I was currently using at the time of the freeze). I checked to see if I needed a firmware upgrade, but the unit had the latest firmware (3.71) installed. Since I had only made that 1 slight edit to the Placater Clean preset, I didn't think it would be an issue to do a full factory reset on my unit and see if that would clear up the software issues. To my surprise, once the reset was complete, I could no longer find the "Placater Clean" preset. It was now gone. In fact, I noticed that there seemed to be a lot of new factory preset names that I didn't recall being there when I first opened up my unit and browsed the list. I wish I had a before and after picture, but I swear it's a whole new list of factory presents. So, I'm puzzled and confused. I don't know how that could have happened. I can't find a historical list of old presets on older firmware versions to cross check and see if maybe (especially because of the above issues I was having) if my system had the newer firmware installed but was running off an older version. Then my reset caused the newer presets to load and display. Can anyone shed some light? And if that Placater Clean preset was an old factory preset that has been replaced. Could someone point me in the direction to either properly recreate it, or download it and reload it. Also, I've ruled out that maybe my unit was a return and the previous owner had loaded some additional presets. The unit I bought was not an open box item. It was a brand new unit. There was nothing in the packaging that would lead me to believe that it was a returned unit that the store was attempting to sell as brand new.