Hi all.
My first post, and not a happy one.
My RS 520 died 1 of March. Bought it used, and product date is 2022-10. So no warranty at all.
It is now with a well renowned service company, although not a factory service partner.
A cost/benefit analysis must be done. Write it off and move on, or have it repaired.
If anyone has possibility to share a service manual, it would be much appreciated. Please PM if so.
Best regards
Chris
The RS520 needs to be ruled out. 
Buy a WiiM Ultra and a good amplifier and you’ll be in a whole new world.
We apologize for the inconvenience.
You can download the RS520 manual from the link below:
https://hifirose.com/support/download/699
Hi, @ROSEHAN
He’s asking for a service manual which is different from the owners manual.
The service manual is needed so that you can make repairs to the circuits.
This is of course assuming that you are a qualified service technician.
@Krille ,
I don’t think Rose will release this to just anyone… but you never know.
Hello,
Please be advised that service manuals for product repairs are provided exclusively to HiFi ROSE’s official regional distributors.
We highly recommend that you entrust your device for inspection to the official distributor from whom the product was originally purchased.
Best regards,