This Amplifier doesn't power on, however it looks to be all there. Clean inside. The main fuse does show  continuity. No further testing done.

Could be something simple The Sansui AU-9900 Integrated Amplifier Stereo Amp is a vintage audio component manufactured in Japan. This model is known for its quality and performance in the realm of vintage audio and video equipment. Although it may not currently power on, it is being sold as parts for those who are capable of repairing or restoring it to its former glory. With the Sansui brand reputation and the model's specific design, this amplifier holds potential for audio enthusiasts looking to bring new life to a piece of audio history.

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