Dimension One Spa Balboa, D1S Millenium Series Deluxe Printed Circuit Board 01710-79, 59-138-1615, D1SR1A, D1SR1E. D1S P.C. Board, 1997-1999 Replacement PC Board for 1997 thru mid 1999 Dimension One Spas. (1997) Luxxor, Chairman, Diplomat, Sedona (1998) Luxxor Chairman, Diplomat, Aurora I & II, California, Nautilus (1999) Chairman, Chairman II, Diplomat, Aurora II, Californian. 51485