Few weeks back started to have trouble with my trusty Raidon/Stardom SL3620-2S-LB2 NAS storage. After reboot it would work for few hours and then go crazy. It would loose configuration and unable to detect hard drives. In some cases it would “forget” configuration and had to use default user account to log in. It would report: no hard drives detected.
What I did was to replace ceramic capacitor 472 500v and capacitor 1500 16V (marked in red) from power supply..