Sao Win SDT-10 Strain Guage Cartridge.

Thanks Guys,
I will try DIY.
I had heard Sao was 'uncontactable' from a number of sources.
Peter probably doesn't want to be involved with the SDT preamp rebuilds anymore because he has his own product now.
I would love to give this box a "birthday"..components are historic and I think the cartridge (good as it is) is being held back hugely.
regards,
Greg

I used to be a close personal friend of Sao. Perhaps 15 years ago my telephone numbers failed to reach him and once I failed to find him in the telephone book. I would suspect that if Soundsmith has no circuit diagram, either they didn't need one to rebuild them or they don't want to be involved for some reason.

Have you asked about this over at diyaudio.com ? That would be the first place I'd look.