Up for sale here is this Sansui 8080DB F-2653 circuit board.  This was removed from a Sansui 8080DB that would not come out of protection.  I believe this board will work fine but I would recommend replacing the capacitors and Deoxiting the switch.  This fits the 9090DB as well.  This may work on other Sansui receivers and possibly on other receiver brands as well.  Please see my pictures for details.

US shipping and handling is $10, and international is $24.  I accept Paypal.  If you have any questions, please ask.

I have a number of other Sansui 8080DB parts, collectibles, and vintage electronics listed--feel free to take a look!