Malfunction Cinema Control board or SMPS board.

Put the projector in Stand-By mode, remove the lamp module and the Lamp Cathode Fan assembly to access the Signal Backplane connections with the SMPS wires (reference 6 image). Then, measure on the Signal Backplane the ++12V voltage on pin 1, 2 or 3 of the connector with the black wires coming from the SMPS board. See image.

If the measured voltage is about 12V then replace the Cinema Control board. See service manual chapter "Replacement of the Cinema Controller". Otherwise replace the SMPS board. See service manual chapter "Switch Mode Power Supply (SMPS)".

Note: To remove the lamp module see service manual chapter "Removal of the Lamp Module".

Note: The projector must be in Stand-By mode otherwise no voltages are generated by the SMPS board.