After the Cary5000 spectrophotometer is turned on, there is no action, 
the lighthouse does not rotate, the tungsten lamp does not light up, and there is no action. I can't hear the first bang after a normal boot.After booting, the LED that controls the motherboard displays number 3 and then jumps to number 6, and it never changes. Which master knows what the reason is, please give pointers. Replaced the power supply board with a new one, still the same problem. Looking forward to your reply, thank you very much
