Same here, My 1824 (SN: ST4E18010103) was bought in Nov 15, 2018, died in May 19, 2021, such short life for a Pro audio equip.
2 days ago while I was playing kontakt in StudioOne, suddenly sound stopped, jumped out a window says Studio USB can't be initialied, I turned off 1824, reconnected, switched it in StudioOne, worked for a minute, window jumped out again, then I reconnected, repowered, changed USB port, sometime it worked for a minute then jumped window again, sometime it just kept silence. It still shows up in UC, mixer can be opened, but no reflection to hardware operation(48V, mute, mono), no signals indicated except hardware screen, if I try to update firmware, it jumps a window like this:
Maybe something broke in PCB? Never happened before, I think it is dead, and I just ordered a RME UFX+ yesterday(for it well known stability), wish if I'm lucky, I can still hook them up through ADAT, if not, I'll go get a OctaMic XTC.
As for now, I have to use my Zoom L12 as temporary sound gear.