In an embodiment, the IPM (301,302, . . . ,30N) is connected to PS 10 in one end and in the other end can be connected with one of the plurality of secondary light source (4011,4012, . . . ,401N or 4021,4022, . . . ,402N, or 40N1, 40N2, . . . ,40NN) which include respective LLS (401,402, . . . ,40N), and the IPM (301,302, . . . ,30N) communicates with the MMC 3999 through the respective MCC (381,382, . . . ,38N) with a help of the respective COM (391,392, . . . ,39N), and LS 48. In an embodiment, only one of respective DRV (3611, 3612, . . . , 361N, or 3621,3622, . . . ,362N, or 36N1,38N2, . . . ,36NN) is functional at one time, and only one of light source respective (4011, 4012, . . . ,401N, or 4021,4022, . . . ,402N, or 40N1, 40N2, . . . ,40NN) which composes respective LLS (401,402, . . . ,40N) is functional at one time. When either the DRV (3611, 3612, . . . , 361N, or 3621,3622, . . . ,362N, or 36N1,38N2, . . . ,36NN)) or light source (4011,4012, . . . ,401N or 4021,4022, . . . ,402N, or 40N1, 40N2, . . . ,40NN) or both, become non-functional or defective, the next spare DRV, which are in composition of IPM respective (301 or 302 or . . . 30N) will replace the initially selected DRV, respective the next spare light source respective (4011,4012, . . . ,401N or 4021,4022, . . . ,402N, or 40N1, 40N2, . . . ,40NN) replace the initially selected light source or both of them. The respective MCC (381.382, . . . ,38N) measures the Vin and Vout, and communicates with the respective IS (351,352, . . . ,35N) respective OS (371,372, . . . ,37N) and the MMC 3999. The MCC (381.382, . . . ,38N), and MMC 3999 determines if is functional, in terms of DRV (3611,3612, . . . 361N, or 3621,3622, . . . ,362N, or 36N1,36N2, . . . ,36NN) and/or light sources LLS (4011,4012, . . . ,401N or 4021,4022, . . . ,402N, or 40N1, 40N2, . . . ,40NN)). When a faulty element DRV (3611,3612, . . . 361N, or 3621,3622, . . . ,362N, or 36N1,36N2, . . . ,36NN) or LLS (4011,4012, . . . ,401N or 4021,4022, . . . ,402N, or 40N1, 40N2, . . . ,40NN) is detected, the respective MCC (381.382, . . . ,38N) communicates with MMC 3999 and LS 48 and command the next spare DRV to connect to the PS 10 via its respective IS (351,352, . . . ,35N), the respective MCC (381, 382, . . . ,38N) communicates with MMC 3999 and LS 48 and commands the next spare LLS to connect to the DRV (3611,3612, . . . 361N, or 3621,3622, . . . ,362N, or 36N1,36N2, . . . ,36NN) and/or lighting sources (4011,4012, . . . ,401N or 4021,4022, . . . ,402N, OR 40N1, 40N2, . . . ,40NN) via its respective OS (371,372, . . . ,37N).