Hello David, I sent you the link where you can download the Sansui 220 circuit
Greetings Franco Dosil
Hola David, te envio el link donde puedes descargar el circuito del Sansui 220
Saludos Franco Dosil
https://www.hifiengine.com/manual_library/sansui/220.shtml https://www.radiomuseum.org/r/sansui_220.html https://audiokarma.org/forums/index.php?threads/sansui-220.521305
SOURCE: Is it possible to find
Hi,
Required service manual of Kyocera R-661 amplifier is available HERE for small fee. Service manual file can be downloaded from that site.
Hope these info will help you.
Thanks.
SOURCE: i have a sansui stereo
Remove the fuse cover with a flat screwdriver, then pull the surrounding circular black plastic piec straight out and reorient it to show the desired voltage, then plug it in, insert the fuse and cap.
SOURCE: I have a Sansui 717
Generally speaking, an amp protects itself from heat, shorts and overloads. Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up. You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it. If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good. If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.
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