It's likely there is a fault on the power amp. This is located on the heatsink. A visual check inside the unit might be what you need. Look out for blown parts, bulging capacitors or burnt components. Remember the two channels are generally separate and identical. So identify the two channels. Work back from the speaker sockets if you can't tell. Then compare the left channel parts with the right side components. If it looks odd on the left compared to the right you have found the problem.
SOURCE: I have a Sansui AU-717
This company is not like they used to be. You can try the links below to see if you can find authorized service for your set.
Sansui:
http://www.sansui-india.com/
http://www.classicsansui.net/
Historic information about Sansui:
http://en.wikipedia.org/wiki/Sansui
I would personaly suggest to find a service center or a very good local tech who can do audio amplifier and reciever service.
Jerry G.
SOURCE: Sansui 3200Z stereo receiver --
now you have to try and isolate frist your problem .is it your speakers? your cabling or your receiver? check all your cables for any loose connections. check your speakers for possible damage, you can try using another set of speakers to your receiver and see if it does the same thjing and wont work. or try also your speakers in another set of receiver.
SOURCE: sansui au-G90x integrated amplifier connetcted
Dirth control switches and/or dirty/corroded/worn-out speaker relay.
SOURCE: I have an old Sansui 400 receiver. I get no sound
The problem seems to be the left transistor part of the unit. Try this:change A versus B speakers, asuming speaker A was working properly. If still speaker A, now connected to left output does not work, you will probably have transistor malfunction on the left channel of the receiver. Any electronic store will substitute the left transistors.
Good Luck.
Flavio/BRAZIL
Testimonial: "very helpful"
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