Sony STR-D515 audiovisual unit (Heaton Norris SK4)

Superb AV box, four line inputs and phono, something to do with compatible TVs, delayed speaker starting and overload protection, doesn't have RDS. Complete with remote, but the vacuum fluorescent display is very dim, not visible in daylight, the Vacuum fluorescent display may be either low emission or failed cathode supply, service manual available online. I will draw lots if there are many requests.