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https://www.radioradar.net/en/service_manuals/videotechnics_circuits/samsung_sv_613b_x.html

Samsung SV-613X/611X/610X/510X, SV-613F/610F, SV-613B, SV-B150B/B150X/B130G

Schematic diagram, oscillograms at the control points of the videorecorder Samsung SV-613X/611X/610X/510X, SV-613F/610F, SV-613B, SV-B150B/B150X/B130G