Topic: No output sound fireface ufx

Hi!
Have used my fireface ufx for several years without any major problems. But suddenly it made some weird noises and the output sound stopped working. It might have over heated during summer. But it looks like everything is normal now in the totalmix so I dont understand. I even borrowed a ufx from my job and it doesnt function either! What can I do?!?

My fireface UFX settings:
Firmware v359
Driver v3.08
Adat2
AES
CONSUMER
44100Hz
Internal

iMac MacOS High Sierra
V 10.13.2

Playing from my iTunes these faders are active:
AN 1/2
Phones 1
PHONES 2
Main
Routing mode: submix

Six faders are active on the Fireface UFX
Main/phones volume is of course almost at full.
The monitors makes some small «crackle» when I turn the mac on or the fireface, so they are all right. But neither of the phones are working either.

Mix is: straight playbacl, mix to main out.
Hooked up with USB 2.0 And monitors to «balanced line level output 1 + 2»

Any suggestions?!?