All switches lock in correctly. Very nice action. Great replacement for bad switches. May need Detox before installing. Unnumbered one is as/is parts only. Will refund $10.00 if you choose this one.
Switch set #2 is tested and works. Tested in unit, all functions operate as intended. Guaranteed to work when you receive it. No other warranty implied.
Be sure to examine pictures closely. There is no refunds or returns on electronic parts. So, be sure this fits your Sansui before you pay.
Another offering from, Gary …sansuioldaudiophile