Classic Stereo

Sansui 771 Stereo Receiver Troubleshooting Example and Tips

Sansui 771 Power Supply Regulator Speaker Relay Driver

My Sansui 771 Stereo receiver has been with me for more then 35 years .  This article will review a problem that came up 5 years ago and outline the steps I took to fix it. 

 

While I am unsure of the exact year, my Sansui 771 was manufactured in the mid 1970s with mostly discrete components.  The schematic for the 771 and many classic stereos ise available from hifiengine.com which makes troubleshooting much easier. 

 

The problem I had was two fuses blowing in the power supply and no output from the amplifier at all.   Like most of its peers in this mid-price range, the Sansui 771 delays engaging the speakers when it is powered up by several seconds and that was not happening.  

 

Read more for the steps I took to resolve this.

Sansui 771 Stereo Receiver 35 year long term product review

Sansui 771 Stereo Receiver 35 years young

My Sansui 771 Stereo Receiver has now been with me for 35 years.  It continues to be my primary amplfier and it deserves a long term ownership product review.
 
I purchased this receiver in "used" condition in 1978.   Other receivers and amplifiers have come in to the shop to challenge it's position, but it has remained in the #1 position.  Why does it sound so good and why do I like it so much?
 
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