thanks so far. If i do a factory reset, am i going to have to reload all my samples again?
I just ran test mode in the startup menu and got the following information, which means absolutely nothing to me:
1 ERRORS
UI:[+]
NVRAM:[+]
DRAM:[+]
FPGA:[+]
+DRIVE:[+]
AUDIO:[-]LR12345678
UI FIRMWARE: 1.1
I just tried a factory reset and that didn’t help
Don’t have a manual in front of me, but it looks like your AR has an error, and that error looks to be on the AUDIO system: error LR12345678…which kind of explains the lack of audio…would check with Electron support.
I’m not an expert but if you ran TEST mode and get one error and not an hasard AUDIO:[-]LR12345678
Exactly the problem you had … it smell like a Factory Repair for me. it sucks for you LIVE sorry for you… Maybe someone could help here, i hope it for you
I think you’re right!
I’ve emailed support. If i have to send it off to sweden does anyone know what the turnaround time is on repairs?
Appears you’re not the only one :
http://www.elektronauts.com/t/turned-on-my-rytm-today-and-no-sound-lr12345678/6942
Nope not idea of the time for a repair 
damn! 
oh shit! problem solved - it was the power supply!!
oh wow, who’d have thought?
Do you have any ‘midi in’ going to it?
I’ve had sound outs on my AR a few times but coaxed it back to life; I suspect I was sending it bad midi though.
yeah but only midi clock. looks like it was the power supply from my MM or MD of all things!!
Hi
your problem has been solved?
because I tried to change the power supply, but noting change.
Help me please!
yes, solved. it works fine after the power supply swap. i was using a PSU from one of my other Elektron machines
I get this problem quite a lot. I only have the one elektron machine and no power supplies to swap. It seems to be an intermittent problem that always resolves itself in time. I would say it seems to be a software bug as the rytm can always be coaxed back into life with enough restarts etc. But yeah the test page will say there is a problem with all outputs but I suspect there is nothing physically wrong with the machine just a software issue.
hello, just had the same problem and i had to say : thks for the tip !! it was just an fucking powersupply swap 
nearly two hour this morning searching what happenning … so lets play now !!!
I just opened a ticket with support because I turned on my Rytm tonight and had exactly the same problem.
I ran the test mode, reloaded the OS, wiped the machine…not until I swapped the PSU with my A4 did I fix it.
Thanks for documenting what solved it in your case.
Me too i came back at home from my work and poeff no sound at all! 
the day before the night before everything was fine.
WHAT I DO NOW ??? HELP
I’d try another PSU3
I’d try it too already the oNe from my analog4…
Did you try with headphones, new project ?