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.
4 of the 6 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.
I can't find the amp models
There are none
Working as designedHX Effects is the effects half of the platform by design. If you wanted amp models, that is an HX Stomp.
HX Effects 3.80 Owner's ManualMy computer won't record from it
It is not an audio interface
Working as designedUSB carries editing, firmware and control messages only.
HX Effects Cheat SheetMy pedal in the loop sounds wrong
Level mismatch between the loop and the pedal
The loops can run at instrument or line level. Set them to match what you have put in them, in Global Settings > Ins/Outs.
HX Effects 3.80 Owner's ManualThe display keeps changing to an effect I didn't select
A foot resting on a capacitive switch
Working as designedTouching a switch selects its effect for editing without switching it. Nothing is wrong.
HX Effects Cheat SheetIt loses power mid-set
The supply cable is not secured
There are two cable-tie hooks on the rear for exactly this. Loop the cable through one.
HX Effects Cheat Sheet