wlaycook Posted October 19, 2023 Share Posted October 19, 2023 Hey guys - been having some issues with my Helix MIDI channel switching recently that are making me want to pull my hair out. I have a Marshall JVM 410H, and about four months ago, I followed the great guide here with respect to setting up Snapshots for channel switching while also switching effects from the Helix that feed into the amp (using the bank/program method). I followed the guide and everything worked perfectly (even gigged a few times with this setup and it was great). Well, last week, I fired it up again at rehearsal and noticed that the MIDI communication wasn't "talking" to the amp (the Snapshots were switching between FX configurations within the preset accordingly, but the amp's channels were not switching). After playing around with it for a few hours, I decided to do a factory reset on both my Helix, as well as a MIDI reset of the Marshall (where you hold down the clean channel while powering on). Tried the above method with a few new blank Helix preset. No luck at all. What's weird is that after powering the amp down overnight and back on in the morning today, it seemed to work briefly as intended but then after a few more times of cycling through the snapshots, it stopped again. I'm really at a loss, as I've troubleshot seemingly everything. The only thing that has changed since it was last reliably working is that my amp tech rebiased the amp and replaced the preamp and power tubes with some new JJs. Amp sounds great, but really upset that the MIDI switching doesn't work. Have a gig in a week so would really appreciate any feedback. Any ideas? Quote Link to comment Share on other sites More sharing options...
rd2rk Posted October 19, 2023 Share Posted October 19, 2023 Attach your preset and a link to the "guide" that you used to create it. 1 Quote Link to comment Share on other sites More sharing options...
datacommando Posted October 19, 2023 Share Posted October 19, 2023 On 10/19/2023 at 6:01 AM, rd2rk said: link to the "guide" that you used to create it. Hi, Easy to miss - It was hidden in the body of the text in the post. You just require the example .hlx preset now. Hope this helps/makes sense. Quote Link to comment Share on other sites More sharing options...
wlaycook Posted October 19, 2023 Author Share Posted October 19, 2023 Thanks - I will try to send the preset when I get home. I tried again this morning before heading to work, and all seemed to work fine. An interesting pattern that I've noticed is that the MIDI functionality seems to start acting erratically after I've had the amp on for several minutes / extended play. This matches with what happened at my rehearsal a few weeks ago. It's like the MIDI stops communicating after the JVM has been on for a while. I've posted over there to see if there are any thoughts. Either way, I'm going to have my amp tech take a look as soon as he can. Quote Link to comment Share on other sites More sharing options...
rd2rk Posted October 19, 2023 Share Posted October 19, 2023 On 10/19/2023 at 5:19 AM, datacommando said: Easy to miss - It was hidden in the body of the text in the post. I need better glasses... 1 Quote Link to comment Share on other sites More sharing options...
wlaycook Posted October 19, 2023 Author Share Posted October 19, 2023 MEMORY PRESET.hls OK here are the two presets (ignore the misspelled "aemory") I was using while trying to channel switch. Quote Link to comment Share on other sites More sharing options...
datacommando Posted October 19, 2023 Share Posted October 19, 2023 On 10/19/2023 at 6:21 PM, rd2rk said: I need better glasses... Hahaha, yup, we’re very old guys, but I got an eye test just last week and mine have no changes to my prescription. It’s great to know that at the wrong side of 70, I can still see my feet. ;-) Quote Link to comment Share on other sites More sharing options...
rd2rk Posted October 20, 2023 Share Posted October 20, 2023 On 10/19/2023 at 1:49 PM, wlaycook said: MEMORY PRESET.hls 3.98 kB · 0 downloads OK here are the two presets (ignore the misspelled "aemory") I was using while trying to channel switch. That's a setlist (.hls). Presets are .hlx. You probably hit EXPORT on the SETLIST line in HX Edit. Quote Link to comment Share on other sites More sharing options...
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