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Reference
Reference

Troubleshooting

Indexed by what you notice, not by what the subsystem is called — because when something is wrong you know there's no sound, not that it's a routing problem.

10 of the 13 problems below are not faults. They are documented behaviour that looks like a fault, and they are marked working as designed. “Your unit is fine” is a useful answer and nobody publishes it.

My stereo effects collapsed to mono

A Clone block sits before them

Working as designed

Every Clone is mono and sums anything stereo in front of it. Move stereo effects after the clone.

Helix Stadium Owner's Manual 1.3.2
Clones →

My snapshot edits vanish when I switch snapshots and come back

Snapshot Edits is set to Discard

Working as designed

Global Settings > Preferences > Snapshot Edits decides this. Recall (the default) keeps your changes as you left them. Discard returns the snapshot to its last-saved state — which is the behaviour you want live, and the behaviour that eats your work while you are building. Hold BYPASS and press SAVE to flip it at any time; the camera icon on the Home screen is grey for Recall and red for Discard.

Helix Stadium Owner's Manual 1.3.2
Snapshots and modes →

A snapshot I just selected sounds identical to the last one

Nothing has been changed in it yet

Working as designed

That is exactly what an unedited snapshot does — it carries the state you arrived with. It only becomes its own thing the moment you change something in it. Nothing is broken; you have simply not written it yet.

Helix Stadium Owner's Manual 1.3.2
Snapshots and modes →

Loading a preset jumps to a snapshot I didn't choose

It recalls whichever snapshot was active when the preset was saved

Working as designed

Saving a preset stores all of its snapshots and remembers which one you were on. If a song should always start on the intro sound, select that snapshot and then save — the choice is made at save time, not at load time.

Helix Stadium Owner's Manual 1.3.2
Snapshots and modes →

The snapshot footswitches disappear as soon as I pick one

Snapshot Mode Switches is set to Auto Return

Working as designed

Set Global Settings > Footswitches > Snapshot Mode Switches to Manual Return and it stays in snapshot mode until you press CANCEL. Auto Return is right when snapshots are an occasional visit; Manual Return is right when they are how you play the set.

Helix Stadium Owner's Manual 1.3.2
Snapshots and modes →

My delay or reverb cuts off the instant I bypass it

Not the same problem as tails cutting off at a preset change, and it has a different answer — this one is a setting inside the block.

That block's Trails setting is Off

Working as designed

Trails Off mutes repeats and decays the moment the block is bypassed. Trails On lets them ring out naturally, through a bypass and through a snapshot change. It is set per block, so one delay left wrong is enough to make a whole rig feel abrupt.

Helix Stadium Owner's Manual 1.3.2

Is it safe to plug the XLR outs into a desk with phantom power on?

This one is worth reading before it is a problem rather than after.

No — Line 6 flag this in capitals, twice

Never connect these XLR outputs to a device whose XLR inputs have 48V phantom power enabled. On a desk, that means switching phantom off for those channels before you plug in, not after.

Helix Stadium Owner's Manual 1.3.2
Inputs and outputs →