Find all the documentation for downloading your vintage hifi or audiophile Tectronic on vintageshifi.com, whether it is to use your device or to repair it. You will find these documents in the form of PDF files: Download service manual, audio manuals, hifi manuals, service information, schematics, owner's manuals, brochures, catalogs for amplifiers, pre-amps, power amps, tuners, tape decks, cd players etc...
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If a file does not open, it is likely that the download is incomplete so be sure to download the files one at a time, and at a time of low traffic.
Tectronic-SR-400E-Schematic