It might be worth asking on AV Forums. Someone might recognise the fault if you describe it accurately. They might also be able to tell you if it is possible to remove that hard disk, mount it in a suitable caddy (cheap as chips from China via AliExpress or Gearbest, etc) and read it with a PC.
This looked interesting:
https://www.avforums.com/threads/toshiba-rdxv60kb-3-in-1-recorder-psu-relay-clicking.2076108/
Phdsr
January 2020