Technics | Sa-370s Service Manual
Before you can use it, you need to source it. Physical copies are rare, so most technicians opt for digital scans.
Do not work from a phone screen. Print the Main Amplifier Schematic and Power Supply Schematic at A3 or Tabloid size. Use a highlighter to trace signal paths. Technics Sa-370s Service Manual
Old Technics receivers often suffer from a relay that fails to engage (no sound). Before you can use it, you need to source it