My Mixer started to do a hard noise when I turn up the level to Efects. If I don´t use the efects there is any noise but If I have this model it was because I want the efects. The noise sound is like a crunch constantely (similar when you take a bag of lays chips). What can I do to fix it?

The device will not power up.  I am using a Furman power conditioner

it is in a controlled studio.  (no moisture, sunlight, overheating).  

Powerlight comes on, then dims and flickers

The device doesn't work will not connect to wifi, nor register on the usb.

Hola. Hace un par de meses compré este artículo a través de Thomann junto a la U-PHORIA UMC202HD. Las conexiones que tengo son del micro de condensador con xlr a una de las entradas del ULTRAGAIN (línea 2)y desde este una salida con xlr a una de las entradas de la interfaz, la cual está conectada por usb al pc. Creo que hasta ahí está todo correcto. Luego al dar volumen de entrada al micro (un RHODE NT1A), suena un ruido de como de metralleta de clips horrible, lo cual empezó a ocurrir desde hace varias semanas. Sin embargo, en el otro canal tengo conectado de la misma forma otro micro Presonus con AUDIOBOX USB96 y no ocurre lo mismo, igual que si todo lo anterior lo conecto a la línea 1. Por favor, ¿podéis decirme si estoy haciendo algo no correcto?. ¿Se puede deber a un problema en el ULTRAGAIN?. Os dejo un archivo para que lo comprobéis. Gracias.

Good morning/afternoon,

For the last 8-9 months we have been utilizing the X-USB expansion card in our x32 console to I/O most of our 32 channels through Logic on a Macbook Pro so that we can apply external plugins to said audio signals.  Recently, we began experiencing an odd degredation in the return audio signal that can last anywhere from a couple of seconds on up to a minute.  Resetting the console / laptop doesn't remedy the issue, and it has occurred to us even when there are no active signals being run through (e.g. between practice and the service and nobody is even on stage).

Attached is an audio sample highlighting the issue, with unaffected audio at the beginning and end for reference.

The audio clearly affects only those channels being processed in Logic and returned to the board, as the guitars (which are not processed through Logic) remain unaffected.  Also, at no point did Activity Monitor show the CPU being pushed beyond 20% utilization.

If anybody has a clue what this is I would deeply appreciate any insight.

Our setup:

x32 console running latest firmware
X-USB expansion card (USB 2.0 32 in/32 out)
15' USB 2.0 cable
2019 Macbook Pro
 - Catalina 10.15.7
 - 2.3 GHz 8-core i9 (9880H)
 - 16 GB RAM
 - 1TB NVMe
Logic 10.6.2
 - I/O buffer size 32 samples
 - Processing threads Auto
 - Processor buffer range Medium

Thank you!