Replacement Balboa Leisure Bay 500S and S3 PCB Circuit Board.

*Balboa Circuit Boards are marked with a Chip Number that is located on a white label on the logic chip near the center of the board. It is essential that the number on your existing board matches the number LB500SR1B. Boards may look similar, however, the programming may not allow it work properly in all applications.

If you have any questions regarding whether this part is the right replacement for your spa, please give us a call.

This part is identical to and can replace part numbers: 053409, LB 500S, S3.

Balboa Water Group Part # 53409