teo-torriate Posted January 11, 2019 Share Posted January 11, 2019 I hope my English is good enough to describe my problem... I've found nothing that matches exactly my problem. I bought my helix in November 2018. Until last week I used a Blackstar ID260 as Amp/Monitor (mono) and had no problems with the sound or anything else. I used the 1/4"-Out with a TRS instrument cable (Left/Mono). Yesterday my two Yamaha DBR10 (active monitors) werde delivered - and I hoped to make a big step on the way to reach my "perfect sound". Unfortunately I've got a problem with hum - only on the right channel. I use the 1/4"-Outputs with instrument-cables and on the Yamaha-monitors the line-input "1". The inputs are switched to "line" - switching to "Mic" made it even worse. The humming gets louder when I turn the level-control of the speaker to higher positions. If the controller is at "-∞" there is no hum to hear. When I pull off the TRS-Cable from the Helix, there is nothing to hear. The Volume of the Helix has no effect on the humming. I pulled all cables out of the Helix (Guitar in, Variax, Send+Return 1, MIDI) in order to prove all connections - but it made no difference. I tried to use the XLR-Outs, but nothing changed, neither when I used the Ground/Lift-Switch. I changed the L- and R-outputs on the Helix (1/4" and XLR) - to make shure, it has nothing to do with the function of the monitors. After that the humming was on the other monitor. I changed all cables (TRS / XLR) and got the same result. So I am shure, that the problem is caused by the right output of the Helix. I proved all Global Settings on the Helix and couldn't find anything. 1/4"-Outputs are set to "Line", XLR-Ouputs likewise. I'm afraid, there's nothing more I could do in this matter. Or have I overlooked something? I appreciate every idea, comment or suggestion! :-) Greets from northern Germany! Teo Quote Link to comment Share on other sites More sharing options...
zolko60 Posted January 11, 2019 Share Posted January 11, 2019 Try to use sends as outputs to make sure you are troubleshooting correctly and take a support ticket. Greets! (I remember the times there were no northern Germany - just eastern and western ;) Quote Link to comment Share on other sites More sharing options...
brue58ski Posted January 11, 2019 Share Posted January 11, 2019 Is the hum present if you listen on the headphone output? Quote Link to comment Share on other sites More sharing options...
teo-torriate Posted January 11, 2019 Author Share Posted January 11, 2019 4 hours ago, zolko60 said: Try to use sends as outputs to make sure you are troubleshooting correctly and take a support ticket. Greets! (I remember the times there were no northern Germany - just eastern and western ;) Thanks for your suggestion! I will try tomorrow and report after that. Although it feels not to be the right way. ;-) East and west... Great! You made may day! :-))) Quote Link to comment Share on other sites More sharing options...
teo-torriate Posted January 11, 2019 Author Share Posted January 11, 2019 11 minutes ago, brue58ski said: Is the hum present if you listen on the headphone output? Oh, I've forgot to mention: there's no hum on the headphone output. Quote Link to comment Share on other sites More sharing options...
brue58ski Posted January 11, 2019 Share Posted January 11, 2019 30 minutes ago, teo-torriate said: Oh, I've forgot to mention: there's no hum on the headphone output. Unfortunately, since that's true, I'm afraid it does need to be sent in for repair. One other thought though, I'm assuming you tried both speakers. Just to make sure the issue isn't with one of them. Quote Link to comment Share on other sites More sharing options...
teo-torriate Posted February 20, 2019 Author Share Posted February 20, 2019 On 1/11/2019 at 4:57 PM, brue58ski said: Unfortunately, since that's true, I'm afraid it does need to be sent in for repair. And that's how I did it then. Unfortunately it took more than four weeks to get my Helix back. But now it's running well and everything works properly. And I'm glad to have it back! :-) Rock on - and thank you for your support! Quote Link to comment Share on other sites More sharing options...
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