On Tuesday, July 24, 2018 at 4:09:38 PM UTC-4, Ian Field wrote:
Someone here seems much better at finding service manuals than me.

AFAICR: its just a web page with a well hidden button to download it.

Thanks for any help.

You might be thinking of:

https://elektrotanya.com/

But I doubt Sony ever produced a service manual for such a cheap item. They're on ebay in the $20 range.