Also had a no sound irregular issue. Initially powering down and back up would work. Then not anymore. Did a factory reset, reinstalled my backup files and it worked for 3 minutes and then shut down in the middle of playing for no obvious reason. I don't know if it is due to the type of settings I created. I am attaching the system backup just in case someone wants to look into it.
HX Stomp Backup 2021-Mar-20.hxb